Venussar Boat Trailer Rollers with Brackets 4" Keel Roller Assembly Kit for Boat Trailer

["【with Mounting Bolt】Included mounting bolts; if ours mounting bolts dont fit your trailers holes need to purchase additional bolts." 【Modular Design】Allows for quick installation and disassembly saving time and labor costs; compatible with 4" rollers. 【Durable】Ensure slide smoothly during towing reducing friction and wear between the vessel and the trailer and extending the service life of both the vessel and the trailer. 【Premium Material】Made of high-quality steel(heavy duty galvanized Bracket) and high quality rubber with high strength and durability. 【Widely Used】Fit for small yachts fishing boats vessels etc. If any questions please feel free to contact us anytime.]