Pre-preg carbon tube, with increased wall thickness to 3.8 mm for the ultimate durability against bending and breaking. Fitted with a stainless steel cleat/pulley offering the best weight to stiffness ratio and creating very light weight as well as being very durable and load resistant. Designed for the ultimate performance and maximum longevity. Features - Quick-lock release. - Stainless pulley system for less friction and greater durability. - Stainless clamshell adjustment system. - Dynema rope for reduced friction and increased longevity.