Enhanced Loading Assistance: The trailer roller bow stop features built-in grooves that help center your boat as you load it onto the trailer, simplifying the loading and unloading process. Keel Support and Protection: This 195mm trailer roller bow stop provides smooth, non-marring, and resilient protection for the keel of your boat. Efficient Boat Launching Aid: The boat trailer roller assists in efficient loading and launching, helping to center your boat on the trailer. Heavy-Duty Protection: The protective rollers are designed for heavy-duty use, offering added safeguarding for your watercraft during loading and unloading. Resilient PU Construction: The roller bow stop is made from durable PU material, enhancing longevity and resistance to sunlight, chemicals, and fuels.