Strength: 20,000lbs Sheave: Aluminum Mechanics: Bushing or Non-Sealed Needle Bearing Sides: Stainless Steel Axle: Stainless Steel Max. Diameter: 5/8"/15.5mm Weight: 2 lbs. 3oz. /1005g Color: Stainless NFPA Version: Exceeds tests for national fire protection association standard on fire service life safety rope and system components NFPA 1983-2006 edition. *Not Certified*