Johnson Duramax IRIS Non-Metallic Sleeve Cutless Bearings feature a dense structure of engineered reinforced thermoset plastic. IRIS non-metallic cutlass bearings are ideally suited for installations wherever corrosion or electrolysis is a problem. Duramax Marine is the world's largest supplier of non metallic bearings and each is made in the USA. Order your IRIS cutless bearing today and save. The measurements for the IRIS cutlass bearing are: Shaft Size: 2-1/4 inches Outside Diameter: 3 inches Length: 9 inches