Dia 15mm 3-6V dc 4 wire 2 phase Micro dc stepper motor with nut Screw Rod Lenght 52MM Stepper Angel 18 degree Motor diameter: 15MM, Height: 12MM, Rod diameter: 3MM; Rod Length: 52MM Size of Sider: 12*16*3mm; Effective Stroke of Sider: 40mm Voltage: 3V-6VDC; Current: 300mA- 400mA; Weight: 19g Motor type: 1 x 2 phase 4 wire stepper motor