Widely Application:This Boat Trailer V Bow Stop Can be adapted to most ships The Boat Trailer V Bow Stop size:2" Mounting Width, 3.8" V Span, 1/2" Mounting Hole Diameter High quality:Made from Polyurethane material,Resistant to rot and cutting,Protects your boat from collisions. Easy to Install:No additional tools are required for installation,that could save you valuable time and increase efficiency. This bow stop block is designed for long-lasting use on boat trailers,Boat Bow Stop makes boat to be snugged down on the trailer to prevent your boat from any direct collisions