The CMI RP122NFPA Heavy Duty Pulley features stainless steel sideplates, 4" aluminum sheave, bushing, and stainless-steel axle.

Specifications:

• Sheave Diameter: 4"
• Max Rope Diameter: 5/8"
• Body Material: Stainless
• Sheave Mechanics: Oilite Bronze Bushing
• Sheave Material: Aluminum
• MBS: 20,000 lbs
• SWL: 4,000 lbs
• Width: 4.75"
• Height: 8.0"
• Depth: 1.036" (sideplate to sideplate)