Strength: 8,500lbs Sheave: Aluminum Mechanics: Sealed Needle Bearing Sides: Stainless Steel Axle: Stainless Steel Max. Diameter: 5/8"/15.5mm Weight: 10.4oz/295g Color: Stainless Part Number: RP104|Weight: 0.65 lbs|MBS: 8,500 lbs (37kN)|Rope Capacity: 5/8"|Side Plates: Stainless Steel|Mechanics: Bearing|Sheave: 2 3/8" Aluminum|Axle: Stainless Steel|Size (in): 4.25x3.25|Efficiency: 0.956