This is the front end of the motor ball bearing, copper sets of back-end, 5 groups winding, at a voltage of 24V, large torque, low noise. Model: 775 Shaft Diameter: 5 mm Shaft length: 17 mm Body length: 66.7 mm Front steps diameter: 17.4 mm Former high level: 4.7 mm Body diameter: 42 mm Motor Overall Length: 98 mm Diagonal installation pitch: 28.8 mm Mounting hole size: Mounting hole: 2 Cooling fan: Yes Rated voltage: 24 V Current Rating: 0.16 A Rated Speed: 7000 RPM Different voltage parameters: DC 12V, current 0.14A, speed 3500RPM DC 18V, current 0.15A, speed 4500RPM DC 24V, current 0.16A, speed 7000RPM DC 30V, current 0.17A, speed 8100RPM DC 36V, current 0.20A, speed 9000RPM Material:Metal Colour:Silver Package Included: 1 x 775 Motor Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.