Rollers are an important tool for boaters, along with their trailers. Rollers can be strategically placed to keep the hull of a boat from scraping against a dock or any other fixed structure that is near the water. The best rollers are made of polyurethane, which gives way, but it's also strong and durable so that it does not break down easily with repeated pressure. We have a selection of rollers of different sizes, as well as some replacement parts to ensure that your boat is well-defended whether on or off the trailer.