High rigidity & ultra low friction material leads to advanced drive. The Axon SparGear V2 series uses newly developed ultra-low friction and high rigidity materials that utilize high precision gear and have been reborn under a long term test under various conditions. It also improves the rolling feeling of the machine during top speed and cornering and also improves the linear feeling of the driver throttle and braking, giving it a superior performance in all aspects. This product does not include fuel, batteries, batteries, charger, paint, glue, oil, and grease. High rigidity & ultra low friction material leads to advanced drive ASIN B08MX5VSNJ Item Weight 0.32 ounces Manufacturer Axon Item model number GS-T4B-080 Product Dimensions 1.97 x 1.97 x 0.39 inches Manufacturer recommended age 14 months and up