Sadly I must give this one star due to the strange length of the draw bar (the part that goes into the receiver. For some reason they have chosen to make this with an unnecessarily long draw bar so that it does not fit into a standard 1 1/4" receiver. I have used several other bike racks and trailer hitches with no issues, and I have never seen a draw bar quiet so long.
If you have a 1 1/4" receiver and there is a back on it, this will not work for you.
Also the 2" adapter that came on it is tightened down so firmly I almost broke an Allen key trying to remove it.
Otherwise it looked like a fairly nice rack, but unfortunately it was unusable for me.