The World Industries Gizmo Wheels are your 4-pack of team wheels. World Industries wheels are poured- not injection molded, and a high rebound, high quality urethane compound is used. All these wheels’ riding surfaces are machine lathed for true uniformity. Available in colorways as seen below. Colors are limited to specific size. See colors below for correlating size. Sizes available as seen below. Wheels sold in set of four.