--- product_id: 765917129 title: "400lb 100% Dupont Kevlar Braided Line, 1.7mm Dia, Cut and Abrasion Resistant, Low Stretch, Heat Tolerant to 900 f(Heavy Duty Speargun Band Constrictor line, Model Rocket Paracord, Survival/Tactical)" brand: "spearit" price: "¥43" currency: JPY in_stock: false url: https://www.desertcart.jp/products/765917129-400lb-100-dupont-kevlar-braided-line-1-7mm-dia-cut store_origin: JP region: Japan --- # 400lb tensile strength Heat resistant to 900+°F 1.7mm ultra-thin diameter 400lb 100% Dupont Kevlar Braided Line, 1.7mm Dia, Cut and Abrasion Resistant, Low Stretch, Heat Tolerant to 900 f(Heavy Duty Speargun Band Constrictor line, Model Rocket Paracord, Survival/Tactical) **Brand:** spearit **Price:** ¥43 **Availability:** ❌ Out of Stock ## Summary > 🔥 Tie the Future Tight with Kevlar Power! ## Quick Answers - **What is this?** 400lb 100% Dupont Kevlar Braided Line, 1.7mm Dia, Cut and Abrasion Resistant, Low Stretch, Heat Tolerant to 900 f(Heavy Duty Speargun Band Constrictor line, Model Rocket Paracord, Survival/Tactical) by spearit - **How much does it cost?** ¥43 with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/765917129-400lb-100-dupont-kevlar-braided-line-1-7mm-dia-cut) ## Best For - spearit enthusiasts ## Why This Product - Trusted spearit brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Pure Dupont Kevlar Excellence:** 100% genuine Dupont Kevlar yarn, no blends or substitutions—crafted in the USA for premium reliability. - • **Clean, Secure Knots Every Time:** Superior knot retention with no melting needed—tie extra constrictors and trim flush for a sleek, professional finish. - • **Heatproof for Extreme Conditions:** Withstands scorching temperatures up to 900°F, perfect for fire poi, welding, and model rockets. - • **Unmatched Strength, Zero Stretch:** 400lb tensile strength with near-zero stretch for ultimate control and durability. - • **Tactical Versatility in Your Pocket:** Lightweight 30ft coil serves as fishing line, snare, tent stay, or emergency gear repair—your survival multi-tool. ## Overview This 30ft, 1.7mm diameter braided line is made from 100% genuine Dupont Kevlar, delivering a massive 400lb tensile strength with near-zero stretch. Heat resistant up to 900°F, it’s engineered for heavy-duty speargun band constrictors, tactical survival uses, and extreme outdoor applications. Manufactured in the USA and tested by defense contractors, it guarantees premium durability, superior knot retention, and versatile utility for professionals who demand the best. ## Description Spearit's 1.7mm Kevlar line is a great heavy duty constrictor for thicker band rubber (greater than 5/8") and for those spearos that really want to strangle their tubing. Kevlar's ultra high strength, low stretch and superior knot retention mean that once tightened, your constrictor knot will stay tight. Avoid the problems of knot creep or stretch inherent in other synthetic fiber cords. Near zero stretch allows the use of smaller, rubber-saving wishbone terminals. Forget melting the end of your constrictor to keep the knot from slipping out. For a clean finish you can tie an extra constrictor with the knot tails and trim the excess cord flush with the knot. Its high strength to weight ratio and toughness make it a great tactical/survival accessory for outdoor activity. With a nearly weightless small coil of this cord in your pocket you've got extra fishing line, tent stays, snare line, sewing thread or 1000 other ways to save the day. High heat tolerance (to 900+ f), make it an excellent: model rockets paracord and fire poi accessory. This cord is braided from 100% Kevlar fiber made in the USA by Dupont and then is assembled and tested by a US defense contractor. Unlike some of our competitors, there is no fine print about fiber blending, braid components that are not Kevlar or generic substitution. ## Features - FIBER TYPE: 100% Genuine Dupont Yellow Kevlar(R) yarn made in the USA. No off brand substitution! No fine print about other fiber in the braid! - DIA: 1.7mm LEN: 30 ft (9m) TENSILE TEST: 400lb (See important notes about tensile strength and appropriate applications in main description) - MAX DUTY BAND CONSTRICTOR: Perfect! Low stretch, great knot retention, no melting. Just tie an extra constrictor and trim it flush for a clean finish. - HEAT RESISTANT TO 900+F - Great parachute cord for model rockets, fire poi and sewing thread for welding garments. - SURVIVAL/TACTICAL/OUTDOORS: Fishing line, tent stays, snares and gear repairs. A small coil in your pocket saves the day in 1000 different ways. ## Images ![400lb 100% Dupont Kevlar Braided Line, 1.7mm Dia, Cut and Abrasion Resistant, Low Stretch, Heat Tolerant to 900 f(Heavy Duty Speargun Band Constrictor line, Model Rocket Paracord, Survival/Tactical) - Image 1](https://m.media-amazon.com/images/I/8154dmWQ5RL.jpg) ## Available Options This product comes in different **Size** options. --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.jp/products/765917129-400lb-100-dupont-kevlar-braided-line-1-7mm-dia-cut](https://www.desertcart.jp/products/765917129-400lb-100-dupont-kevlar-braided-line-1-7mm-dia-cut) --- *Product available on Desertcart Japan* *Store origin: JP* *Last updated: 2026-11-09*