JFATXTT 8 Inch Trailer Keel Roller with Bracket and U-Bolts,Blue Keel Roller Kit Assembly for Easy Loading and Launching,Galvanized Steel

["Our boat trailer rollers with brackets are made of high-quality and durable PU rubber with galvanized steel,strength and durability.","The 8-inch keel roller reduces friction and wear between the boat and the trailer,extending the service life of both the vessel and the trailer.","Our keel roller kit includes a bow roller and bracket assembly to support the boat's bow and reduce stress on the trailer. An ideal replacement for old, worn-out keel rollers.","Keel Roller Size: L 7-5/16\" long x D 3-3/8\" with 0.65\" diameter hole; Galvanised bracket: L 8-3/16 \"L x W 6-3/16 \" with 5/8\" shaft. Mounting slot size is 1/2\", Mounting slot spacing: 6-3/16\" on centre.","The boat trailer roller is suitable for various boat trailers, such as small yachts, fishing boats, and commercial vessels which provide reliable support and functionality for various boating needs."]