Feature:1. Stepper motor linear can be used in DIY small slider/project/measurement equipment/laser printer2. This miniature 2phase 4wire stepper motor come with planetary gearbox, planetary gearbox reducer adopts all metal structure3. You can drive accurate diagonal lines to move the metal slider up and down, the bracket is basically made of metal structure4. Using high class materials with good quality to guarantee stable performance and high working efficiency5. Come with advanced technology with fine workmanship, which is a necessary linear moving partsSpecification:Item Type: Stepper Motor LinearMotor Type: 2-Phase 4-wireDrive Voltage: 4-9V/100-500mA (the higher the voltage, the greater the force, the greater the heat)Screw Length: Approx. 90mm / 3.5inSlider Stroke: Approx. 80mm / 3.1inMotor Diameter: Approx. 15mm / 0.6inScrew Diameter: Approx. 3mm / 0.1inOptical Axis Diameter: Approx. 3mm / 0.1inScrew Pitch: Approx. 0.5mm / 0.02inStep Angle: 18Phase Resistance: 15.5 ohmsOverall Size: Approx. 105 x 15 x 18mm / 4.1 x 0.6 x 0.7inBlue: A+, Black: A-, Red: B+, Yellow: B-.Package List:1 x Stepper Motor LinearNote:Note that it is a stepper motor, does not turn when directly connected to the power, a stepper motor driver board and control board are required.Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.