Function: Made of high quality aluminum alloy, high strength and flexibility, lightweight and convenient to carry. The pull-up system uses V-shaped friction grooves to minimize rope wear when dropped. The user can control the rope more easily and the rope is not easy to tangle. The rope hole has a double row design, which can fit one rope and two ropes. The two ropes do not tangle each other when descended. Compact structure, small size, suitable for professional rock climbing enthusiasts. Specifications: Condition: 100% Brand New Material: Aluminum Alloy Weight: Approx. 65g / 2.3oz Size: Approx. 3.7 x 2.1 inches (9.3 x 5.3 cm). Color: Black. Package List: 1 x Climbing Descender.