I purchased the three bike rack and the lock & key hitch pin. 1. My hitch is 1.25 inch and the lock & key is loose fitting, so the whole bike rack sways. 2. When put the rack in the upright position, it is tighten with PLASTIC screws which did NOT tighten at all & the rack (rack legs for lack of words) move down when you put the bike on the rack, plus moved back & forth. My husband had to use plastic ties on each side so the rack wouldn't move. So disappointed for the money!!!