Possibly the best of both worlds in the way of a fast and sticky slalom wheel. Manx wheels are proudly made in the U.S.A. and feature a hard plastic center core/hub to ensure proper bearing alignment and a small outter lip on both sides of the wheel. We used top quality urethane, which makes this wheel a very functional advantage and unfair edge if you take your slalom racing serious. They're 74mm diameter and 54mm wide. Available in the following durometers: 78a, 80a, 84a, & 88a. Find the combo that works best for you. Get a set and charge through the cones with the upmost of confidence. These wheels are built for going fast with superior grip.