"Flat dock bumpers"
I mounted the bumpers on 2x4 box tubing that are welded to the support beams on my boat house. These bumpers absorb impacts from the boat when docking and leave no marks. These impacts are due to wind, wake.boat waves, sometimes judgement or a combination of the three. My bumpers are mounted on 2x4 box tubing welded to the support beams. They look great and protect my boat (24V Tige) and dock from each other