I give the product 3 stars because the instructions are soooo bad. You can barely read the instructions and then where to put the nuts and bolts is a wild guess. There is one point in the instructions where the wording has P1, P2, P3, etc, but there is nowhere to be found which wheel is P1, P2, P3, etc. I ended up going to a hardware store to get more nuts and bolts as well as the space separators. Not sure if I did not get the parts or if I put them in the wrong place because of the crappy instructions. Would be good, for a product at this price, to have a step by step video. Other then that, the product works very well.