Ideal for DIY sliders, projects, measuring equipment, and laser printers. Features a miniature 2-phase, 4-wire stepper motor with a planetary gearbox. All-metal planetary gearbox reducer for robust construction and longevity. Precisely moves the metal slider up and down with a metal bracket. Motor drive voltage: 5-9V/200-600mA (higher voltage means more power and heat). Specifications: Item Type: Stepper Motor Motor Type: 2-phase 4-wire system Drive Voltage: 5-9V/200-600mA Screw Length: Approx. 45 mm / 1.8 inches Slider Stroke: Approx. 34 mm / 1.3 inches Motor Diameter: Approx. 20 mm / 0.8 inches Screw Diameter: Approx. 3 mm / 0.1 inches Screw Pitch: Approx. 0.5 mm / 0.02 inches Step Angle: 18° Phase Resistance: 21Ω Wiring: Blue A+ Black B+ Red B- Yellow A- Package includes: 1 x Stepper Motor