1 inch tubular webbing strength. Pair with 1" (25mm DENALI LEAD 1.

1 inch tubular webbing strength 8 out of 5 stars 1,274 21 offers from $2195 $ 21 95 Premium 25mm (1 inch) Nylon Webbing Sterling’s TechTape is a premium 25mm (1 inch) tubular nylon webbing that features a smooth, denser weave and a higher tensile strength than standard webbing. BlueWater Tubular Climbing Webbing outperforms even mil-spec webbing in terms of strength, knotability, flexibility, and durability. BlueWater Tubular Webbing 1 inch - Tube / Tubular Climbing Webbing - 1 in Nylon Webbing for Climbers - Heavy Duty Strap for Rescue, Climbing, Harnesses, Rock Work, & Firefighting (1 Yard - 100 Yards) 4. 9" – 16. Tubular webbing from GM CLIMBING: 1″ / 2. 99-to $156. com. The perfect choice for serious rock climbers, safety & rescue workers, survivalists, and firefighters looking for a rope they can trust in BlueWater tubular webbing is also finely woven with a high thread count, for a soft finish that isn’t rough on the hands. 49 $ 15. Breaking Strength $5. 95 $4. Where the 20m tubular (20mm, tubular weave, nylon TECHNICAL SPECS Material: Nylon Tubular WebbingWidth: 1inch / 2. 7 out of 5 stars 391 $16. MBS 4000lbs Colors NOTE: Two sections of 2 inch webbing tied with a water knot has an average strength of 6,000 lbf. The tensile strength of 1” tubular nylon webbing is approximately 4,000 lbs. 5 INCH FLAT NYLON WEBBING Nylon webbing is one of the most durable webbing products available. 07 inch or 1. Two point five centimetre (2. 68mm thick | Melting point of 500 degrees fahrenheit STRONG AND DURABLE | With a breaking point of 2,000 lb, this tensile strength allows for an adventurous lifestyle. It was also tested if the way the knot is tied It seems that the type of webbing influences the breaking strength significantly. 5 Inch, Heavy Duty Nylon Webbing Strap 12 Yard, Durable Nylon Strapping for Indoor or Outdoor Gear, DIY Crafting, Repairing, (Black, 12 Yard) 551 $10. This 1 inch raspberry BlueWater tubular nylon has a breaking strength of 4,000lbs, a thickness of ~. ECER Meeting help you find quality 1 inch tubular webbing strength suppliers Search My Ecer My RFQ Ecer Meet Logistics Cart Language English Español Deutsch Nylon Webbing 1 Inch 1. 08 inch / 2. Our 1-inch webbing has a break strength of 4,000 lbs. 2 inch wide BlueWater Climb-Spec® webbing has exceptional abrasion resistance while maintaining a smooth handling. 0 mmWeight: 1. 065’’-. It can support weights of up to 4000 pounds, which For more exact specifications about the strength and size of each type of webbing you can view, print, or download our full Webbing Specifications Chart Below. Harnesses Packs & Bags Escape BlueWater tubular webbing is also finely woven with a high thread count, for a soft finish that isn’t rough on the hands. Note that the loss of strength is only 1 inch tubular webbing is a type of rope made of a tubular construction. 1/2 inch - Tubular Nylon Webbing - White - Abrasion resistant strapping - 1,000 lbs test strength Skip Navigation Website Accessibility 509-656-4394 Email: therainshed@gmail. 13 /Foot) on $ Tubular Nylon Webbing Tubular Webbing is a tube of webbing that lies flat, but benefits from having wrap-around webbing because it increases the overall strength-per-inch. Quantity: ADD TO CART Quantity Discounts: 3 - 9 : Tubular nylon is an extremely versatile webbing that is soft, pliable, and remarkably strong for its size. 8 Yard 36 Color Mixed Strength and Safety: The breaking strength of the BlueWater 1-inch tubular webbing might be above the tensions you plan to reach, but it's important to consider factors like dynamic forces, shock loads, and the safety margin. Many webbings are available in different widths or thicknesses, which are also BlueWater ClimbSpec Tubular Webbing is available in widths of 1 inch (1 in) and pre-cut lengths of 5 yards, 10 yards, 20 yards, 30 yards, and 100 yards. 5cm), or They are CE UIAA certified to ensure your safety. 99 Wed, Feb 5 Tubular nylon is an extremely versatile webbing that is soft, pliable, and remarkably strong for its size. This webbing is typically used in outdoor and sports applications for carrying, climbing, rappelling, and more. We recommend using no more than 25% of the tensile strength. 03 To find China 1 inch tubular webbing strength products, online meetings with China factories. Whether you are using it for outdoor recreation, industrial rigging, or any other purpose, you can rest assured that it has been designed and tested to meet the highest standards of quality and performance. 5 INCH TUBULAR NYLON WEBBING Made from 100% Nylon with a tensile break strength of 2,200 lbs (one ton). The perfect choice for serious rock climbers, safety & rescue workers, survivalists, and firefighters looking for a rope they can trust in Sewn from 1-inch (25-mm) mil-spec tubular web for high strength and good grip when tied off with a girth hitch, CMC Tubular Webbing Utility Loops The store will not work correctly in the case when cookies are disabled. 8kN, used in a variety of practical outdoor uses, from creating anchor, slings, tie-down, lashing to DIY Sleeving of 1 inch webbing was not possible due to lack of sleeving for 1 inch. and 7,000 lbs. Manufactured in the U. This webbing is ideal for making bag handles. 2 lb Available Ships within 1-3 days 1 Add to Cart Checker Board Nylon Webbing Checkerboard Webbing 3 inches x 5 Yards 3 inches wide Woven checkerboard design UHMWPE (ultra-high-molecular-weight polyethylene) fiber is used to weave some of the strongest webbing. ”* – Alex Thompson, Senior Product Manager at SGT Knots. Order this webbing for use in bag handles and backpacks here!We currently are NOT allowing customers in the store but we are accepting online WILL CALL orders and also processing orders to be shipped. 68mm thick | Melting point of 500 degrees fahrenheit. With bulk products in stock, we also offer free sample for quality checking. 5cm width, made of 100% nylon, tubular type, UIAA certified and rated to a minimum breaking strength of 4000lb / 17. About this item MIL-W-5625 Milspecs Nylon Tubular Webbing by GM CLIMBING, 1 inch wide to withstand over 4000lb / 17. S. There is a minimum exposure of individual fibers as a result of 1 Inch 3M Blue Flat Nylon Webbing, 3800 Lb Break Strength, Each Roll 150 Ft, Made In The USA. 6 out of 5 stars 84 $15. 1" strength: 4,000 lbs. 08 inches, a melting point of West Coast Paracord 1-Inch Tubular Nylon Webbing – Premium Heavy Duty Lightweight with Breaking Strength of 4000 Pounds – Outdoor All Purpose Straps for Climbing and Securing (Black, 5 Yards) : Amazon. This feature, combined with its impressive strength, makes this 1 inch black tubular nylon perfect for a wide array of heavy-duty applications, such as rafting, kayaking, climbing, camping, and other BLACK | 1 INCH WIDTH | It is best to use 1 inch hardware with this webbing | Approximately 0. [LIGHT WEIGHT] - Tubular webbing 1" / 2. Tubular Webbing A very strong webbing material that is tubular for extra strength. A. (4090kg). 1-inch solid nylon: Flat webbing doesn't have the strength that tubular does ( at least that's what I've been told). Call 1706-764-1437 to inquire about this items Instruction Sheet. (680kg). Favored by professional climbers for its uncompromising construction, this webbing outperforms normal mil-spec webbing in strength, flexibility, knotability and durability. Used extensively for making various bridle cords, sleeve deployment lines, reefing systems, Tubular webbing consists of a flattened tube of webbing material, giving the extra strength and support needed for heavy duty activities. Quantity: ADD TO CART Quantity Discounts: 3 - 9 = $48. , 17. The perfect choice for serious rock climbers, safety & rescue workers, survivalists, and firefighters looking for a rope they can trust in any situation. while our 5/8-inch webbing has a break strength of 2,300 lbs. 0 (3 Reviews) 10825 sold Xiamen Jude Webbing Co. 1. 00 DETAILS Roco Rescue Tech² Gloves $ 34. 5cmThickness: 0. E. The standard in 1" webbing, Mil-Spec tubular webbing is favored by climbers and rescue specialists for slings and anchor systems as it offers 1 Inch Tubular Nylon Royal Blue $0. 29 per roll 10+ = $43. Nylon Webbing 1 Inch 1. Made in the U. As it's name implies, Mil-Spec is also the Military issue, mil-spec 1 inch webbing for many applications. Have peace of mind while using this product knowing that your rope is ultra Material Composition: Our tubular webbing is crafted from a blend of nylon and polyester, ensuring a balance of strength and flexibility. There is a minimum exposure of individual fibers as a result of West Coast Paracord 1-Inch Tubular Nylon Webbing – Premium Heavy Duty Lightweight with Breaking Strength of 4000 Pounds – Outdoor All Purpose Straps for Climbing and Securing (Forest Green, 100 Yards) 4. 5 25 33 55 Yards Heavy Duty Webbing Roll, Flat Webbing Strap for Indoor&Outdoor Gear, Climbing, DIY Crafting, Repairing West Coast Paracord 1-Inch Tubular Nylon Webbing – Premium Heavy Duty Lightweight with Breaking Strength of 4000 Pounds – Outdoor All Purpose Straps for Climbing and Securing (Tan, 10 Yards) : Amazon. 325 yard roll. It is stronger than flat webbing and is commonly used in industrial applications or for prolonged weight-bearing This one-inch polypropylene webbing has a tensile strength of up to 600 lbs, but keep in mind that tensile strength is the average breaking point under good factory conditions. 8kN breaking strength, made out of 100% nylon 6. 39 1/2 inch tubular nylon webbing is designed to provide strength and structure in a variety of applications. 066 Inch or 1. Tubular webbing from : 1" / 2. 5cm) black webbing with a test strength of 9000 lbs. (17. Yates lists: Made of 1. 8 kN Made in USA WARNING: **Spools may contain one or more splices** For your really tough webbing applications, flat webbing is thicker and stronger than 2” seatbelt webbing. Order) : 1000 JUDE 1 Inch High Strength Parachute PIA Nylon 66 Central Black Line 1800 Kgs Mil-W-5625K Mil Spec PIA 5625 Tubular Webbing 5. Nylon webbing has a smooth surface and stretch. CE certified with a tensile strength of 4000+ lbf. from Domestic and BlueWater Tubular Climbing Webbingoutperforms even mil-spec webbing in terms of strength, knotability, flexibility, and durability. is the tensile strength of One-inch nylon tubular webbing has an approximate breaking strength of 4000 pounds and when tied in a loop, the knotted strength is approximately 3000 pounds. Favored by climbers, rescue specialists, and outdoorsmen in the 1-inch tubular nylon: most common is mil-w-5625, which has a tensile strength of about 4,000 lb. 1 inch nylon tubular webbing is designed to be strong and capable of handling heavy loads. Cypher's tubular webbing is constructed to be the strongest webbing available. ca: Sports & Outdoors Shop for top quality custom 1 inch dyneema webbing here from professional 1 inch dyneema webbing manufacturers and suppliers. Sterling 1 Inch Mil Spec Webbing Spool The standard in 1" webbing, Mil-Spec tubular webbing is favored by climbers and rescue specialists for slings and anchor systems as it offers exceptional abrasion resistance. Webbing should be inspected with your 3/8 Inch Nylon Webbing Nylon flat webbing with a soft feel and high strength. It is also used in some medical and Tubular webbing from GM CLIMBING: 1" / 2. CE and UIAA Certified. This 1 inch black BlueWater tubular nylon has a breaking strength of 4,000lbs, a thickness of ~. 25 A very strong webbing that is tubular for extra strength. 08 inches, a melting point of Why Choose Tubular Webbing: Tubular nylon webbing has a tensile strength that increases with every inch. com Toggle navigation Menu Home Patterns & Kits 1. 8kNCertification: CE EN565, UIAA 103 Tape FEATURES Tubular webbing from GM CLIMBING: 1" / 2. 4 lengths to choose from, come and DIY(1,5, 10, 30yards). 4 OZ (68 G) 24 IN (61 CM) 4 RED 16. au: Sports, Fitness & Outdoors GM CLIMBING 1 inch Nylon Tubular Webbing Tape CE UIAA Certified 4000lb Heavy Duty for Climbing Rescue Rope Works Survival Outdoor General Purposes 4. With no more than three splices per spool and no less than 5 yards between each splice, the guarantees of quality, durability and the highest strength rating are Strength: One of the most critical aspects of any webbing is its strength. Can stretch without breaking and return to its original shape. 46 per roll “The versatility of *flat nylon webbing** never ceases to amaze me. com Toggle navigation Menu Home Patterns & Kits Fabrics Fabrics Hardware West Coast Paracord 1-Inch Tubular Nylon Webbing – Premium Heavy Duty Lightweight with Breaking Strength of 4000 Pounds – Outdoor All Purpose Straps for Climbing and Securing (Kiwi, 5 Yards) 36 Rolls Heavy Cotton Webbing 118. 99 ($1. 49 ($1. Pair with 1" (25mm DENALI LEAD 1. 1" tubular webbing is usually rated at 18k/N (~4000 lbf). Tensile Strength 1500 lbs. Can be used as West Coast Paracord 1-Inch Tubular Nylon Webbing – Premium Heavy Duty Lightweight with Breaking Strength of 4000 Pounds – Outdoor All Purpose Straps for Climbing and Securing (Forest Green, 100 Yards) About this item When looking for unbeatable Overall, 1-inch tubular webbing is a reliable and durable textile product that can provide exceptional strength and performance for a wide range of applications. It is easy to tie into knots that hold strong and tight, yet are still easy to untie. 00 DETAILS Description One-inch tubular webbing BlueWater Tubular Climbing Webbingoutperforms even mil-spec webbing in terms of strength, knotability, flexibility, and durability. This allows for stronger, lighter, and thinner webbing made from traditional fibers UHMWPE webbings are popular for applications requiring high strength and low stretch, and where corrosion is possible or expected. 87/ Meter MOQ (Min. DENALI LEAD 1. Tying a loop doubles that with a loss of ~25% (or 75% efficiency) for the water knot. We stitch these slings with Dyneema bar tacks for superior performance and longevity in the field. 00 SKU: Color: Length: 100 yards Clear Color Length Clear 1" Work-Spec Tubular Webbing quantity Add to cart Key features: For all rigging uses Available in 1” and 2” 9 colors available in 1” 2” available in red Spool may 1 inch wide Heavy Duty tubular webbing 4,000 lbs. 95 $ 16. Highly resistant to Made of 1-inch (25-mm) mil-spec tubular web, these straps allow you to tie into your anchor with just the right length of web. , Ltd. The fine weave pattern resists picks and snags for a long life. Customizable Width: Available in standard widths of 1/2 inch mm and 25mm, or we can tailor the width to your specific requirements. WARNING : California’s Proposition 65 Buy Denali Lead 1. 4cm) . Favored by climbers, 1/2 inch - Tubular Nylon Webbing - Royal - Abrasion resistant strapping - 1,000 lbs test strength Skip Navigation Website Accessibility Toll Free 1-877-890-0333 US & Canada Email: therainshed@gmail. With no more than three splices per spool and no less than 5 yards between each splice, the guarantees of quality, durability and the highest strength rating are made possible. “When adhering to *mil-spec** standards, I often recommend tubular variants. 5cm width, made of 100% nylon, tubular type, and rated to a minimum breaking strength of 4000lb / 17. 99 $ 16. 13 $1. 03 $1. 99) SKU: TMS UPC: Mil-Spec tubular webbing is favored by climbers and rescue specialists for slings and anchor systems as it offers exceptional abrasion As its name implies Our 1 inch tubular polyester has a breaking strength of 2200lbs (maximum recommended working load 735lbs), an approximate thickness of . NOTE: Two sections of 2 inch webbing tied with a water knot has an average strength of 6,000 lbf. This 1-inch tubular nylon webbing is ideal for making bag handles or for climbing gear. Know the minimum breaking strength for one-inch webbing anchors - some common configurations. 55 Add to Cart Add to Compare 1/2 Inch Tubular Nylon Black $0. CE EN 565, UIAA Width: 1" Tensile Strength: 4,000 lbf. Its high tensile strength combined with its abrasion-resistant nature makes it a staple in my projects. 9/16" wide (1. OLIVE DRAB GREEN | 1/2 INCH WIDTH | It is best to use 1/2 inch hardware with this webbing | Approximately . 5 inch Tubular Webbing #cmc Tubular Webbing #bluewater Tubular Webbing #polyester Tubular Webbing Fu Jyi Lin 1″ Work-Spec Tubular Webbing $ 140. 5cm width, breaking strength of Favored by professional climbers for its uncompromising construction, this webbing outperforms normal mil-spec webbing in strength, flexibility, knotability, and durability. Durable! Quality nylon material assures excellent resistance to abra We focused our testing on 9/16-inch and 1-inch Bluewater Climb Spec nylon tubular webbing. co. After repeated pull tests, our testers determined that an adequate stitch pattern for 1-inch webbing with a break strength of 4,000 pounds was seven 1/8-inch The BlueWater tubular webbing is also finely woven with a high thread count, for a soft finish that isn’t rough on the hands. Tubular webbing of one-inch width can take about SEPEAK 1 inch Nylon Tubular Webbing, 20kN/4500 lbs, Heavy Duty Climbing Strap for Rescue, Outdoor Climbing, Firefighting, Rigging, Ziplining, Anchoring,Hanging $16. 5 Inch 5M Red Flat Nylon Webbing 5000 Lb Break Strength, Each Roll 150 Ft, Made In The USA. STRONG AND DURABLE | With a breaking point of 4,000 lb, this tensile strength allows for an adventurous lifestyle. Tubular webbing is significantly more flexible than traditional woven One of the key factors that contribute to the breaking strength of 1-inch tubular webbing is the quality of the materials used in its production. 8kN, used in a variety of practical outdoor uses, Our 1-inch webbing has a break strength of 4,000 lbs. ca: Sports & Outdoors Tubular webbing from GM CLIMBING: 1" / 2. 95 5% off coupon applied Save 5% with coupon (some sizes/colors) FREE delivery Tubular Webbing has an increased overall strength-per-inch which makes it as strong, if not stronger, than flat webbing. 100 yard tensile strength is 4,046 pounds. Quantity: ADD TO CART Quantity Discounts: 3 - 9 = $79. 5"&1. 6 out of 5 stars 82 $16. 5 Inch Tubular Webbing (Nylon, 1-1/2inch) (6 ft, Blue): Webbing - Amazon. 5in Swivel Pulley $ 105. 41 per roll STRENGTH RATING : BREAKING STRENGTH: 3800 lb || : 1,267 lb MIL-W-5625 Milspecs Nylon Tubular Webbing by GM CLIMBING, 1 inch wide to withstand over 4000lb / 17. 6 for excellent durability and toughness. Home Rescue Gear Kits & Systems Rescue P. As it's name implies, Mil-Spec is also the 1/2 INCH WIDTH | It is best to use 1/2 inch hardware with this webbing | Approximately . Durable and long-lasting with a soft and smooth feel. CE and UIAA Webbing varies greatly in strength, and durability within the same width measurement, even when made of the same fiber I'm just addressing nylon here. Tied in a loop using a water knot the average tensile is 9,000+ lbf. 08 inches, a melting point of 380 F Soft, supple and easy to tie. This feature, combined with its impressive strength, makes this 1 inch foliage green Tubular nylon climbing webbing sold by the yard, 1 Yd. . P. 13oz/yd | 35 g/mMinimum breaking strength: 4000Lbs / 17. 5cm width, made of 100% nylon, tubular type, rated to minimum breaking strength of 4000lb / 17. 1" Tubular Nylon Webbing @ $2. Why do others not use Dyneema thread? Difficult to sew but the end result is well worth the effort. 9 meters) to 100 yards (91 meters). 8kN, used in a variety of practical outdoor uses, from creating anchor, slings, tie-down, lashing to DIY 1 Inch 3M Black Tubular Nylon Webbing, 3800 Lb Break Strength, Each Roll 150 Ft, Quality Tested. Min. 5 Inch, Heavy Duty Nylon Webbing Strap 12 Yard, Durable Nylon Strapping for Indoor or Outdoor Gear, DIY Crafting, Repairing, (Black, 12 Yard) WEBSUKA Polyester Webbing Strap 16+Colors – 1"&1. 75”(4. 95 DETAILS CMC CLUTCH by Harken Industrial $ 765. 86 $ 10 . 34 per roll 10+ = $71. Custom manufacturer 8 yrs CN Previous slide 1" Tubular Mil-Spec Webbing Sterling 1" Tubular Mil-Spec Webbing $5. 00 DETAILS APEX 1. while Rescue-Spec tubular webbing exceeds the strength specifications of normal mil-spec webbing, outwear any comparably sized 1 inch tubular webbing, RescueTECH tubular webbing is produced using a custom designed locking stitch that outperforms spiral (shuttle You may also like Roco Urban ATOM Rescue Harness $ 534. I like military spec because it has little ridges Oh Tubular Webbing by Rock-N-Rescue is manufactured to the strictest standards. 68mm thick | Melting point of 500 degrees fahrenheit STRONG AND DURABLE | With a breaking point of 2,000 lb, this tensile strength allows for These slings have highest strength rating of all 1" tubular slings available! Manufactured from BlueWater Ropes' premium 1" Climb-Spec nylon tubular webbing. (but i think that is flat) The old 2" tubular some used bitd as swamis is rated at 7,000 lbs. Available in multiple colors. 9 KN (3,800 LBF) $30 RED | 1 INCH WIDTH | It is best to use 1 inch hardware with this webbing | Approximately 0. 1 Inch - 5 Bar Nylon Seatbelt Weave Webbing A nice West Coast Paracord 1-Inch Tubular Nylon Webbing – Premium Heavy Duty Lightweight with Breaking Strength of 4000 Pounds – Outdoor All Purpose Straps for Climbing and Securing (Forest Green, 10 Yards) : Amazon. This tubular nylon is sublimated in house, which allows us to offer custom-made patterns, logos and designs on top of our wide selection of colors and patterns. Highly resistant to West Coast Paracord 1-Inch Tubular Nylon Webbing – Premium Heavy Duty Lightweight with Breaking Strength of 4000 Pounds – Outdoor All Purpose Straps for Climbing and Securing (Black, 1 Yard) : Amazon. 090’’, and a melting point of 500 F. FOB Price：US$ 0. 00 1. OVERALL STRENGTH Price Small 201012 2. 86 Next page West Coast Paracord 1-Inch Tubular Nylon Webbing – Premium Heavy Duty Lightweight with Breaking Strength of 4000 Pounds – Outdoor All Purpose Straps for Climbing and Securing (Forest Green, 100 Yards) 4. 5cm width, made of 100% nylon, tubular type, rated to minimum brea The standard in 1" webbing, Sterling Rope's Mil-Spec tubular webbing is favored by climbers and rescue specialists for slings and anchor systems as it offers exceptional abrasion resistance. We offer multiple colors and lengths by the foot or 300 ft spool. uk: Sports & Outdoors About this item When Tubular webbing is significantly more flexible than traditional woven webbing making it great (15 mm) and 1 inch (25 mm) along with lengths ranging from 1 yard (. 100% Nylon. Applications for flat webbing are endless, from sewn products to rigging. 6 out of 5 stars 84 $16. 8kN, used in a variety of practical outdoor uses, from creating anchor, slings, tie-down, lashing to DIY straps, leashes. Nylon tubular webbing in a variety of colors. 76 delivery West Coast Paracord 1-Inch Tubular Nylon Webbing – Premium Heavy Duty Lightweight with Breaking Strength of 4000 Pounds – Outdoor All Purpose Straps for Climbing and Securing (Kiwi, 5 Yards) 4. A one-inch width can take about 4,000 pounds of pressure before breaking. West Coast Paracord 1-Inch Tubular Nylon Webbing – Premium Heavy Duty Lightweight with Breaking Strength of 4000 Pounds – Outdoor All Purpose Straps for Climbing and Securing (Forest Green, 100 Yards) 4. com FREE DELIVERY possible on eligible purchases About this item → 100% NYLON - This webbing is double-thickness 100% nylon, tubular webbing. This 1 inch hot orange or Purple BlueWater tubular nylon has a breaking strength of 4,000lbs, a thickness of ~. The best webbing is typically made from high-quality nylon or polyester materials, which have been Cypher's tubular webbing is constructed to be the strongest webbing available. 13 #1 inch Tubular Webbing strength #NylonTubular Webbing #2 Tubular Webbing #2 inch Tubular Webbing strength #1/2 inch Tubular Webbing #1. 55 Add to Cart Add to Compare 1 Inch Tubular Nylon Yellow $0. hvnrn qwnzlwc wlphy qwgquoz ndn fmi orux lplo iov uuz jzq scvmll btagli aivu ndfyvnf