Really a 5 star product with a 3 star description. According to the product description, adapters are included to use this wheel on 1/2"-2" shafts. Not true; only 5/8" and 3/4" shanks can be used for included items. 5/8" bearings installed, kit includes alternate 3/4" bearing set. To install this on my Coleman sink with a 1/2" axle shaft, I had to purchase copper tubing with a 1/2" ID and a 5/8" OD. I inserted the tube into the wheel and marked the spot where both bearings would be worn. I used a pipe cutter to cut it to length and my "fix" worked great. However, the cost of copper tubing and the hassle of going to the hardware store don't add up to the theoretical convenience of buying online through Revain. I have purchased 9 of these bikes at various times and they have all served me well; Previous applications used a 5/8" mounted bearing without an adapter. up.