Big and sturdy. Voluptuous urethane (proportionate in all the right places) for high roll speed, grip, comfort, and momentum for commuting, carving, long-distance pushing, pumping, and electric longboards. Purchase price includes set of 4 wheels. Longboard wheel specs diameter: 85 mm width: 58.5 mm contact patch: 56 mm style: rounded lips with surface skin bearing seat: offset formula: happy thane core: high-strength, high-stiffness, heat-resistant urethane weight (per wheel): 9.6 oz / 270 g Durometers: 77a Whats in the box? Purchase price includes set of 4 wheels.