Features 1、Can be used in DIY small slider/project/measurement equipment/laser printer. 2、Miniature 2‑phase 4‑wire stepper motor with planetary gearbox, planetary gearbox reducer adopts all metal structure. 3、The stepper motor drives the accurate diagonal pattern to move the metal slider up and down. 4、The bracket is basically made of metal structure, strong and durable, has a long service life. 5、The driving voltage is 5‑9v/200‑600mA, the higher the voltage, the greater the force and the greater the heat. Specification Item Type: NEMA09/20 Stepper Motor Motor 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. 32mm / 1.3in Slider Stroke: Approx. 22mm / 0.9in 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 NEMA09/20 Stepper Motor