Special side plates designed for use with a Prusik friction hitch in progress capture systems Parallel mounted sheaves and auxiliary attachment point for creating different types of hauling systems, including the most complex Large diameter sheaves mounted on sealed ball bearings for excellent efficiency Accepts up to three carabiners to facilitate use Specifications Rope compatibility: 7 to 13 mm Sheave diameter: 51 mm Ball bearings: yes Efficiency: 97 % Maximum working load: 2 x 3 kN x 2 = 12 kN Weight: 450 g Certification(s): CE EN 12278, NFPA 1983 General Use