Ronstan Series 60 AP Sheave - Acetal Solid Bearing - 60mm 2-3/8" OD. Acetal is well suited to the application with characteristics of high strength and resistance to impact and wear. It also exhibits excellent low friction properties for bearing applications Specifications for Ronstan Series 60 AP Sheave: Manufacturer: Ronstan Color: OD Green Package Contents: Ronstan Series 60 AP Sheave Ronstan RF437: Series 60 AP Sheave - Acetal Solid Bearing - 60mm 2-3/8" OD