Poly Vinyl Non-Marring Trailer Bow Roller End Bell Poly vinyl rollers are long lasting, will absorb shock, are cut resistant and will not mark or mar your boat. Tie Downs enhanced formula for PVC far outperforms traditional polyurethane products. Constructed of enhanced polyvinyl chloride 12 Shaft diameter Limited Lifetime Warranty against cutting and fading Available in 3 and 4 Sold individually California Residents WARNING Cancer and Reproductive Harm - P65Warnings.ca.gov Other Details Google