Shop Nilight RV Bumper Hitch Receiver Fits for 4 inch X 4 inch Square RV Rear Bumpers 2 inch Receiver 3500 LBS Capacity Bolt-On Heavy Duty Steel for Camper Bike Racks Cargo Carriers in high quality, support 2 Years Warranty. It provides a secure and reliable way to carry an RV Approved hitch mount rack. Please note that this adapter is NOT intended for towing purposes.