Hard Bristle Boat Brush Head - 9" BlackCaptains' hard bristled brush head is made of solid wood and high quality polystyrene. Firm bristles make it easier to break up and scrub away built up dirt and grime. Use it on your boat deck, foam flooring, and other high traffic areas. Our boat brush is built tough for marine use, but works great on car tires, house siding, anything that can handle a tough scrub. Hard Bristle Boat Brush Head (Black) Great for the boat deck, SeaDek, non skid, foam