Features: DC Gear Motor no load speed (6V): 200RPM ±10% no load current (6V): ≤200mA no load speed (3V): 90RPM ±10% no load current (3V): ≤150mA Voltage: 3-6 V Reduction ratio is 1:48 Tire Size Tire Size Center hole: Long 5.3MM， 3.5MM wide Diameter: 66MM Width: 26MM Package includes: 1 x Tire 1 x DC Gear Motor