Root Air Hjul Til Løbehjul 2-Pak - Gold RushWith a weight of only 230 grams per wheel (with bearings) The Root wheels are one of the lightest wheels ever to hit the market. Thanks to the use of high grade 6061 aluminum and a unique construction. The Air wheels from Root are made with hollowcore technology. This is essentially air trapped in the core between to sturdy aluminum plates. This not only creates a light construction but also makes it very strong. The PU formula that Root uses has