PVC guides your boat on safely and gives you visual aid when backing up your empty trailer. Bright orange end caps on these PVC guides give you a brighter target when loading your boat. The non-mar PVC pipe is braced inside with metal tubing going 15" up into the tube, adding strength and impact resistance. U-bolts and nuts are zinc plated. Mounting hardware is galvanized for corrosion protection. Equipped with LED lights, these guide on's will be more visible in the later night and early mornings.