Series 40 Orbit BB Sheave HHLHigh Load versions are designed specifically for any application where high dynamic or static loads are expected. They feature a high-strength grade 2205 stainless steel sheave & hub together with a triple bearing race to maintain low friction at very high loads.Specifications:SheaveCaptive HHLWidth: 15.5mm/5/8″Sheave Diameter: 40mm/1-9/16″Maximum Rope: 10mm/3/8″M.W.L.: 1500kg/3310lbsWeight: 77g/2.7oz