Description: Double speed pulley, Mounted with ball bearing, the double sheaves of pulley provides great smooth rotation and efficient performance. High Quality Aluminium Magnesium Alloy pulley compatible with both textile rope and cable. Holes for easily clipping carabiners, flexible enough for you to set your preferred zipline model. The speed pulley is compact and quite convenient to carry or disposed, which makes it popular while it carries out its basic function as a general pulley for hauling or transporting equipment. This product has got CE Certification. Specification: Material: Aluminium Magnesium Alloy Color: Red Size: approx. 10.3*7.3*2.8cm / 4.1*2.9*1.1inch Diameter of Rope: 8-13mm Max Pull Tension: 25KN Package Includes: 1 Piece Zip Line Trolley Pulley