Tie Down 5 Roller Bunk Trailer Guide-Ons Crafted with a heavy-duty galvanized steel frame, Tie Downs Roller Bunks provide robust and full hull support, ensuring your boat is well-protected during transport and storage. Our roller bunks offer vertical adjustability, allowing you to customize the setup to match your boats specific requirements. Optional bolster support swivel brackets further enhance flexibility, ensuring a perfect fit for various boat sizes and types. Available in black rubber or