Suitable for small sliders/projects/measuring equipment/laser printers. Miniature 2-phase 4-wire stepper motor with planetary gearbox. The planetary gearbox reducer has an all-metal structure. Drive precise diagonal lines to move the metal slider up and down. The bracket is basically made of a metal structure. 2-phase 4-wire motor, 4-9V/100-500mA drive voltage, it has stable and professional performance. Made of premium stainless steel material, sturdy, anti-corrosion, and durable, long service life. Condition: 100% Brand New Item Type: Stepper Motor Screw Material: Stainless Steel Color: As the picture shows Motor Type: 2-phase 4-wire system Drive Voltage: 4-9V/100-500mA (the higher the voltage, the greater the force, the greater the heat) Screw Length: Approx. 90 mm/3.5 inches Slider Stroke: Approx. 80 mm/3.1 inches Motor Diameter: Approx. 15 mm/0.6 inches Screw Diameter: Approx. 3 mm/0.1 inches Thread Pitch: Approx. 0.5 mm/0.02 inches (0.025 mm in one step, if smaller, you can use a subdivision drive) Step Angle: 18° Phase Resistance: 15.5 Ohm Blue A+ Black A- Red B+ Yellow B- 1 x Stepper Motor Screw