2pcs 4V-5V B05E drive mini stepping motor 2 phase 4 wire hybrid stepper motor micro stepper motor hybrid 2 phase 4 wire motor Stepper angle: 18 Voltage: 4-6V Motor diameter: 15mm;Electrical resistance: 28ohm;Screw length: 52mm Slide stroke (stroke): 40mm;Screw diameter: diameter 3mm;Screw pitch: 3mm