Specification: Notice: The lower velocity is the larger torque Voltage: DC12V No-load Speed: 7rpm, 12rpm, 22rpm, 35rpm, 45rpm, 66rpm, 107rpm, 200rpm, 320rpm, 600rpm, 960rpm Voltage: DC24V No-load Speed: 7rpm, 12rpm, 22rpm, 35rpm, 45rpm, 66rpm, 107rpm, 200rpm, 320rpm, 600rpm, 960rpm Max Power: 10W Max Torque: 25kg/cm Motor Diameter: 33mm Motor Body Length: 22 Output Shaft Diameter: 6mm Output Shaft Length: 15mm Gearbox Diameter:37mm