Feature:1. Used with electric drills, it is the perfect tool for DIY hand-made.2. Self-contained cooling fan, good heat dissipation and long service life.3. 12-24V DC electric drill motor for safer use.4. Strong power, stable performance, low noise.5. Metal construction, anti-corrosion, rustproof and durable in use.Specification:Item Type: Single Ball bearing Round Shaft MotorMotor Step Height: Approx. 4.5mm / 0.18inMotor Step Diameter: Approx. 17.5mm / 0.69inOutput Shaft Length: Approx. 16mm / 0.63in (Shaft length above the step level)Shaft Diameter: Approx. 5mm / 0.2inShaft Motor Diameter: Approx. 42mm / 1.65inMotor Length: Approx. 67mm / 2.64inMotor Tail Step Height: Approx. 11mm / 0.43inMotor Tail Shaft Length: Approx. 5mm / 0.2inPitch of Mounting Hole: Approx. 29mm / 1.14inMounting Hole Diameter: M4 screwRated Voltage: 12V - 24VStarting Current: 4A (1A 2A is with no moving), working current is 300ma at 12v, 24v working current is 400ma Package List:1 x Motor