Powerslide Spinner wheels are probably the best money-for-value high-performance urban freeskate wheels in the market. The urethane offers you all you need - a fast and easy roll, great grip, and a long lifespan. Freeskate wheels endure extreme pressures during slides, jumps, and stair rides, particularly when the entire body weight is concentrated on a single wheel. In order to withstand the high forces, the core is made of very durable glass-fiber reinforced composite material.