CMI's Prusik Minding Pulley's are lightweight versions of classic designs. They allow a hauling system to be set up using a prusik to capture rope progress. The aluminum sheave is 1-1/4" in diameter with bushing mechanics. Made with aluminum sideplates and an aluminum axle. Weight: Single 91 gramsDouble 136 grams|Strength: 31kN 7,000 lbs|Rope: Max Ø 13mm