Specification: Condition: 100% new Material: Plastic + Steel Screwdriver Size: 128 mm/ 5.0inch Rider plate diameter: 80 mm/ 3.15 inch Collar Nut Diameter: 25 mm/ 1 inch Thrust Washer Diameter: 42 mm/ 1.65 inch Other Size as the Picture Shown Manufacturer Part Number: 4126-642-7600, 4126-713-3100, 4126-642-1600 Package includes: 1 x Thrust Washer 1 x Rider Plate 1 x Collar Nut 1 x Screwdriver