Strength: 16,000lbs Sheave: Aluminum Mechanics: Bushing Sides: Stainless Steel Axle: Hardened & Ground Steel Max. Diameter: 5/8"/15.5mm Weight: 20oz/560g Color: Stainless Part Number: RP105|Weight: 1.35 lbs|MBS: 16,000 lbs (71kN)|Rope Capacity: 5/8"|Side Plates: Stainless Steel|Mechanics: Bushing|Sheave: 3" Aluminum|Axle: Stainless Steel|Size (in): 6.5x4.25|Efficiency: 0.921