Noise attenuated Spur-geared metal gearbox, 50:1 Gear Ratio, 4.5 to 15V Voltage Rating, 7.20W Power Rating, 7300rpm No Load Speed, 6031rpm Maximum Speed, 0.84A Load Current, 114g-cm Maximum Continuous Torque, 788g-cm Stall Torque, 35mm Diameter, 6mm Shaft Diameter, 71.1mm Long, 229g weight. Powerful 5-pole Motor, The Gearboxes are of All-Metal Construction and Employ Spurred Gears High Torque Transfer, Output Bearings Enable the High Torque from the Motor to be Efficiently Transmitted Through the Gearbox, Suitable for Heavy-duty Industrial and Model Applications,Current (Max Torque)840mACurrent (No Load)150mAInput Power (Max Torque)7WMax Torque1.1NcmNominal Voltage4.5 to 15VSpeed (Max Torque)181rpmSpeed (No Load)53rpm