Mounts To The Rear Bumper of Any RV...No Drilling Required! “Vehicle BackPack's RV Cooler Rack “sets itself apart” from all other racks, adjusts up and down, avoids restricting license plates. Travels securely tucked-in behind your RV. “Stylish powder coated black finish with a rugged steel frame compliments any RV. Exclusive machined-in “wobble stop” anchors “Rack to Receiver, No Wobble!" Hitch Pin is lockable, Cooler can also be locked to bumper with bike-lock. Accomodates Bumpers 3.5”- 4.5”. Kit Includes, Bolt-On Mount, and Cooler Rack.