2 Inch Bow Stop Rubber Roller For Many Marine Boat Trailers This Boat Trailer Bow Stop provides a Full Protection for Your Boat, enbales Your Boat to Secure Tightly with Trailer, Absorb Shock Product parameters 2" Mounting Width 4" V Span 1/2" Shaft Product Features: 1.Universal Fitment: Designed to protect various kinds of boats, such as ski, aluminum boats, pontoon boats, canoe, fiberglass boat and kayak etc. 2.Highly Durable and Non Marking: Our boat trailer is constructed of Polyurethane material with thick shaft to prevent your boat from hitting the trailer. Also the non-marring prime rubber will not leave any mark on your boat. 3.Easy installation There is a pre-drilled hole on the shaft for you to mount. So it is easy to take the old one off and tighten our bow stop with 3/8 inch bolts through the hole Package Contains: 1 X Boat Trailer Roller