WhamGuard Rotating Bumpers are premium boat dock rollers that work and look great. These boat dock bumpers are specifically designed to rotate as it guides boat into and out of the boat slip. One person can easily install a rotating bumper in minutes. WhamGuard Rotating Bumpers are made of lightweight, durable, marine grade polyethylene. They have a 15 year UV rating and are custom molded for protecting boats and dock structures. Multiple color options are available. You can customize your look to your favorite color, team or complement your boat. All components necessary to install the boat dock roller are included and ship for a flat rate of $20 per roller or “ball”. If you are local to North East Oklahoma lakes, you can arrange for a pick up to avoid shipping charges. If at any time you have questions or need help, call us directly at 918-416-1600.