PU Boat Trailer Roller Assembly 195mm Bow Stop with Grooves for Smooth Launching and Loading Features： 1、Enhanced Loading Assistance: The trailer roller bow stop features built in grooves that help center your boat as you load it on your trailer. It simplifies the loading and unloading process. 2、Keel Support and Protection: This 195mm trailer roller bow stop provides smooth, non marring, and resilient protection for the keel of your boat. 3、Efficient Boat Launching Aid: The boat trailer roller aids in efficient loading and launching of your boat, acting as an assistant to center your boat on the trailer. 4、Heavy Duty Protection: The protective rollers are designed for heavy duty use. They offer additional safeguard to your watercraft when being loaded on or off your trailer. 5、Resilient PU Construction: The roller bow stop is made from long lasting PU construction. This enhances its durability and makes it impervious to sunlight, chemicals, and fuels. Specification： Item Type: Trailer Roller Bow Stop Material: PU Length: Approx. 195mm / 7.68in Center Hole Diameter: Approx. 22mm / 0.87in Fitment: Fit for Boat, Trailer, Yacht Package List： 1 x?Trailer Roller Bow Stop