Features： 1、Premium Material: Made of high strength PU, this bow roller ensures excellent durability and reliability, not easy to break and crack, providing long lasting reliable performance. 2、Reliable Protection: The trailer bow roller prevents rust and marks on your boat, offering cushioning and protection to the hull when secured against bow stop brackets. 3、Shock Absorption: The trailer bow roller stop supports boat weight, absorbs road shock, and prevents scraping against screws or roller brackets for smoother transport. 4、Centering Support: The boat roller assembly helps center the boat and improve stability during transport, preventing bow to bow stand contact for added convenience. 5、Versatile Usage: The bow roller is suitable for trailers, boats, and yachts with a 3.5 inch bow roller with 1/2 inch shaft, ensuring reliable use with a 6.9 inch full length roller. Specification： Item Type: Boat Trailer Roller Central Bow Size: Approx. 3.5in / 8.89cm Shaft Size: Approx. 1/2 inch Total Length: Approx. 6.9in / 17.53cm Fitment: Suitable for Boat Trailers, Ships, Yachts Package List： 1 x?Boat?Trailer?Roller