The Swagman QUAD 2+2 hitch mounted platform bike rack is the ultimate in user-friendly versatility. It can carry two bikes or attach the add-on to transport four and carries bikes of most sizes of frames, wheels, and tire widths. It’s super easy to load the bikes onto the rack. The padded ratchet hooks safely hold the bike frame and the adjustable wheel trays and straps secure the wheels. A locking threaded hitch pin secures the rack to your vehicle while the locking ratchet hook locks your bikes to the rack. The rack folds up out of the way when not in use.