30mm 40mm 50mm MicroDC 5V 2 Phase 4 Wire Stepping motor Mini Electric Precision Screw Slide Stepper Motor
https://www.vogueparade.com/shopping/EN/5/1/1005002436343684/30mm-40mm-50mm-microdc-5v-2-phase-4-wire-stepping-motor-mini-electric-precision-screw-slide-stepper-motor//