The Vevor boat trailer guide set is designed to make loading and positioning small boats easier and more secure on compatible trailers. Its 20.5" guide poles and adjustable width help align fishing boats, dinghies, inflatable boats, canoes, ski boats, and sailboats during loading. Rubber rollers help reduce friction and protect the boat's surface, while the steel construction and anti-corrosion coating support long-term outdoor use. The set installs with U-bolts on trailer beams up to 3" wide and is built for stable attachment.