Item Type: Single Hand Saw 550 MotorMaterial: Copper, AluminumWeight: Approx. 243g / 8.6ozNumber of Gears: 14 TeethVoltage: 21VNo Load Speed: 18000rpmPackage List1 x Single Hand Saw Motor 1Scope of Application: 21V 14 teeth 18000rpm electric saw motor is suitable for lithium electric drills, electric saws, electric screwdrivers, machine tools, etc. 2High Power and Low Noise: 21V 14 teeth single hand saw 550 motor has high power, low noise, and long service life. 3High Speed and High Torque: High speed and high torque DC motor. 21V 14 teeth 18000rpm electric saw motor. 4Ball Bearings and Fixing with M4 Screw: Front and rear double ball bearings. The front can be fixed with 2 M4 screws. 5Good Workmanship: Exquisite workmanship, stable and reliable perforamnce, providing you great using experience.