Feature: 1. Can be used in DIY small sliders, projects, measuring equipment, laser printers. 2. This product is miniature 2‑phase 4‑wire stepper motor with planetary gearbox reducer. 3. Planetary gearbox reducer adopts all metal structure, strong and durable, has a long service life. 4. Drive accurate diagonal lines to move the metal slider up and down, and the bracket is basically made of metal structure. 5. The driving voltage of the motor is 5‑9V/200‑600mA, the higher the voltage, the greater the force and the greater the heat. Specification: Item Type: Stepper MotorMotor Type: 2-phase 4-wire system Drive Voltage: 5-9V/200-600mA (the higher the voltage, the greater the force, the greater the heat) Screw Length: Approx. 45mm / 1.8in Slider Stroke: Approx. 34mm / 1.3in Motor Diameter: Approx. 20mm / 0.8in Screw Diameter: Approx. 3mm / 0.1in Screw Pitch: Approx. 0.5mm / 0.02in (moving 0.025mm in one step, subdivision drive can be used if smaller) Step Angle: 18° Phase Resistance: 21Ω Blue A+Black B+Red B-Yellow A-. Package List: 1 x Stepper Motor Note: Note that it is a stepper motor, it will not turn when directly connected to the power, and a stepper motor driver board and control board.