Description: Climbing double pulley is made of hot forged magnesium aluminum alloy, durable, lightweight, compact, strong Fit for rope diameter: 7-13mm, max tension is 36KN, CE certified Double swing sheave plates make the rope installation and moval much more easier Large connection hole accommodates two carabiners, prusik minding, the self-locking knot can be installed on both sides and both wheels, self-lubricated bushings are the good solution for light applications at low or high speed Various applications: Rock climbing, rescue, tree arborist, descending, lifting, rigging, rappelling, hauling, hiking, mountaineering, rescue, fall protection, rigging, abseiling, and other outdoor activities Specification: Material: Hot Forged Magnesium Aluminum Alloy Size (L x W): Approx. 15x9.5cm / 5.9x3.7 inch Color: Red Package Includes: 1 Piece Climbing Double Pulley Note: Attention: It is necessary to receive adequate training (knowledge of techniques and security measures) before using the tools. Incorrect use or improper maintenance could lead to serious accidents even fatal. Please read carefully or learn enough knowledge before use