{"product_id":"8-字環下降器","title":"Figure-8 descender","description":"\u003cp\u003eA classic Figure 8 Descender designed specifically for rock climbing, canyoneering, high-altitude rappelling, fire escape, and rope technique training. Forged from 7075 aerospace-grade high-strength aluminum alloy, it features an ultimate breaking strength of 35kN and weighs only about 145g, offering high strength, lightweight performance, and excellent heat dissipation.\u003c\/p\u003e\n\u003cp\u003eThe core mechanism utilizes contact friction generated by the rope winding around the ring body to achieve a controlled and smooth descent. It is intuitive and easy to learn, allowing for sensitive control of descent speed simply by tightening or loosening the braking end of the rope. The inner diameter of the large ring is 52mm, ensuring smooth rope flow and uniform friction. It can be flexibly paired with short webbing tethers or heat-resistant prusik knots as a backup braking system to comprehensively prevent the risk of losing control. Compliant with the authoritative XF494-2023 fire equipment inspection standard, it is available in a variety of highly visible anodized color options.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eKey Features\u003c\/b\u003e\u003c\/p\u003e\n\u003cul\u003e\n\n\u003cli\u003e\n\n\u003cp\u003e\u003cb\u003eAerospace-grade 7075 Aluminum Alloy:\u003c\/b\u003e A net weight of only about 145g with a powerful breaking strength of up to 35kN, combining excellent heat dissipation with wear-resistant durability.\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cp\u003e\u003cb\u003eIntuitive and Smooth Friction Control:\u003c\/b\u003e Classic Figure 8 geometry provides uniform and linear rope resistance, with intuitive braking feel that is extremely easy to master.\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cp\u003e\u003cb\u003e52mm Large Aperture with Smooth Chamfering:\u003c\/b\u003e The upper hole diameter reaches 52mm, with finely chamfered edges for smooth rope movement without snagging, significantly reducing abrasion on the main rope sheath.\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cp\u003e\u003cb\u003eFlexible Dual-Protection System:\u003c\/b\u003e Can be used with short webbing extensions or connected to heat-resistant prusik knots for a secondary locking system, making high-altitude operations more reliable.\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cp\u003e\u003cb\u003eAuthoritative Safety Certification:\u003c\/b\u003e Passed the XF494-2023 fire equipment fall protection standard inspection, ensuring guaranteed safety performance.\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cp\u003e\u003cb\u003eMulti-color High-Visibility Anodized Coating:\u003c\/b\u003e Available in 7 colors—red, black, orange, blue, gold, gray, and silver—for easy personal identification and team equipment management.\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\u003cp\u003e\u003cb\u003eTechnical Specifications\u003c\/b\u003e\u003c\/p\u003e\n\u003cul\u003e\n\n\u003cli\u003e\n\n\u003cp\u003e\u003cb\u003eMain Material:\u003c\/b\u003e 7075 Aerospace-grade Aluminum Alloy\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cp\u003e\u003cb\u003eBreaking Strength:\u003c\/b\u003e 35 kN\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cp\u003e\u003cb\u003eNet Weight:\u003c\/b\u003e Approx. 145 g\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cp\u003e\u003cb\u003eDimensions:\u003c\/b\u003e Length 148 mm | Width 77 mm\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cp\u003e\u003cb\u003eInner Diameter:\u003c\/b\u003e Upper circle 52 mm | Lower circle 27 mm\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cp\u003e\u003cb\u003eApplicable Rope Diameter:\u003c\/b\u003e 8.5 – 13 mm\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cp\u003e\u003cb\u003eCertification Standard:\u003c\/b\u003e XF494-2023 Fire Fall Protection Equipment Standard\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cp\u003e\u003cb\u003eApplicable Fields:\u003c\/b\u003e Rock climbing rappelling, canyoneering, high-altitude work, fire escape, mountain rescue, rope technique training for beginners\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\n\u003c\/ul\u003e","brand":"NJTX","offers":[{"title":"黑色","offer_id":45891736305799,"sku":"J005BK","price":56.0,"currency_code":"HKD","in_stock":true},{"title":"紅","offer_id":45891736338567,"sku":"J005RD","price":56.0,"currency_code":"HKD","in_stock":true},{"title":"橘色","offer_id":45891736371335,"sku":"J005OR","price":56.0,"currency_code":"HKD","in_stock":true},{"title":"藍","offer_id":45891736404103,"sku":"J005BU","price":56.0,"currency_code":"HKD","in_stock":true},{"title":"金色","offer_id":45891736436871,"sku":"J005GD","price":56.0,"currency_code":"HKD","in_stock":true},{"title":"灰白","offer_id":45891736469639,"sku":"J005GY","price":56.0,"currency_code":"HKD","in_stock":true},{"title":"銀色","offer_id":45891736502407,"sku":"J005SR","price":56.0,"currency_code":"HKD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0760\/1740\/1991\/files\/Page13_Img09_IM212_324eedc6-41d6-4803-8a3a-021cc2f4f21f.jpg?v=1789813742","url":"https:\/\/treeholic.co\/en\/products\/8-%e5%ad%97%e7%92%b0%e4%b8%8b%e9%99%8d%e5%99%a8","provider":"Treeholic","version":"1.0","type":"link"}