The new miniature two-phase four-wire 4MM stepping motor with planetary gearbox, the planetary gearbox uses an all-metal structure, including the metal outer wall and the secondary metal gear, and then drives the precision slanting stalk to push the metal slider up and down. The brackets are basically made of metal, and the poles use ultra-fine precision ball bearings.There are two types of A and B models in this batch of motors. The difference between the two models is that the length of the cable is different. The stepping motor, the gearbox and the metal sliding table are all identical.Slider stroke: approx. 12 MMMotor phase resistance: approximately 14.4 ohmsNOTE:The product will be upgraded constantly, the appearance and color may be changed, please don't mind. And take a consideration before place the order if you have request for color or appearance.Package include:1pc*motor