We couldn't believe that a premium made-in-U.S.A. wheel didn't exist with a true round profile so we decided to pony up the money for expensive profile tooling and design our own.  We believe you will find these to be the best performing round wheels on the market at any price point.  Endless Round wheels use the same highly regarded urethane as our other 80, 84, 90, and 100 mm wheels.