CE Smith 29570 Rubber Boat Trailer Keel Roller End Cap 2-12 The CE Smith replacement end cap is constructed of black natural rubber and is a direct replacement for original equipment on many trailers. 2-12 Diameter 1-14 Wide 12 Shaft California Residents WARNING Cancer and Reproductive Harm - P65Warnings.ca.gov Other Details Google Product Type Trailer Rollers Wiser Yes Material Rubber Product MPN 29570 Product UPC 768296002343 Fast Ship In Stock Ships Today