1、Can be used in DIY small slider/project/equipment measurement/laser printer 2、2‑phase 4‑wire micro stepper motor come with planetary gearbox, planetary gearbox reducer adopts all metal structure 3、The stroke drive accurate diagonal lines to move the metal slider up and down, the bracket is basically made of metal structure 4、Using high class materials with good quality to guarantee stable performance and high working efficiency 5、Adopt advanced technology with fine workmanship, which is a necessary linear moving parts Item Type: Stepper Motor Linear Motor Type: 2-Phase 4-wire Drive Voltage: 4-9V/100-500mA (the higher the voltage, the greater the force, the greater the heat) Lead Screw Length: Approx. 90mm / 3.5in Slider Stroke: Approx. 80mm / 3.1in Motor Diameter: Approx. 15mm / 0.6in Lead Screw Diameter: Approx. 3mm / 0.1in Lead Screw Pitch: 0.5mm Step Angle: 18° Phase Resistance: 15.5 ohms Overall Size: Approx. 15 x 105mm / 0.6 x 4.1in Blue A+ Black A- Red B+ Yellow B- 1 x Stepper Motor Linear