CMI 4 Pulley Ss Bearing Nfpa. Diameter: 5/8"/15.5mm Weight: 2 lbs. 3oz. /1005g Color: Stainless Specifications for CMI " Heavy Duty 4"" Rescue Pulley Nfpa": Manufacturer: CMI Quantity: 1 Package Contents: CMI " Heavy Duty 4"" Rescue Pulley Nfpa" The CMI " Heavy Duty 4"" Rescue Pulley Nfpa" is a quality addition to the CMI lineup. For more great deals on Climbing Pulleys by CMI please browse our CMI Outdoor Gear page.