4 Inch Soft Parallel / Flat Keel Roller

4 Inch Soft Parallel / Flat Boat Trailer Keel Roller Polyurethane  4 Inch soft poly parallel / flat / bilge keel roller designed for fiberglass boats and hulls 100 x 70 x 17mm bore. Ideal for use with boat trailers, boat trailer parts, rollers, skids, bunks and boating accessories.