This Stoltz Roller Pad is specially designed to fit your 2 inch (7.6 cm) wide crossbar of your boat trailer. If you mount these rollers on your 7.6 cm crossbeams, you prevent the ship's hull from coming into contact with the crossbar. This can damage the ship's hull ugly. The Stoltz material is extremely strong, it does not wear or crack.
This cross-member protector from Stoltz measures 30 cm and is easiest to install using stainless steel 12 x 1 Hex HD screws that are screwed into the four available holes on either side of the Stoltz Poly Skid Pad. Mount this on every crossbar for complete and total protection of your boat hull!