Specification: Output shaft diameter: 3.95 MM (flat position 3.5 MM) Motor weight: 12 grams for a single steering gear, 26 grams for two steering gears (in bags) Voltage: DC3V Current: 50 MA Speed: 23 rpm Voltage: DC3.7V Current: 50 MA Speed: 30 rpm Voltage: DC4.2V Current: 50 MA Speed: 35 rpm Voltage: DC5V Current: 50 MA Speed: 42 rpm Voltage: DC6V Current: 50 MA Speed: 52 rpm This steering gear is a five-wire car model steering gear without a drive plate, all metal gears, weight 12 grams, drive motor is M10 precision micro motor, with a 5K potentiometer, the gearbox is 360 degrees without jam, you can For continuous operation, the rated voltage is DC5V and the applicable voltage is DC3V-6V. The higher the voltage, the faster the motor speed, the greater the power, and the greater the torque. Although the steering gear is small, the metal gear inside is thickened, which looks very solid and reliable. Power on the test machine, the sound is not quiet, but it is not noisy, the torque below DC4.2V is a little bit small, but the torque at DC5V is very good, it can not be blocked by hand, this batch of servos Exquisite workmanship Package Include: 1PCS * steering gear