Tie Down Engineering's Durable gold poly vinyl keel roller ,5" length, 3-1/2' end width and 2-1/2" center dia for 5/8" dia shaft.Has a steel sleeve with nylon end caps for smoother performance and wear resistance. Poly vinyl rollers are long lasting, will absorb shock, are cut resistant and will not mark or mar your boat. Tie Down Engineering's enhanced formula for PVC far outperforms traditional polyurethane products.Sold as each