0-GM12a 100:1 Mini Metal Gear Motor <font color="00ff66" size="2" face="Arial, Helvetica, sans-serif">A great mini gearmotor, at a decent price. The GM12a has a brass front faceplate, not steel.<p>Here are the performance measurements:<p>Running at 3V:<br>Free running speed: 85rpm<br>Free running Current: 18mA<br>Stall Torque: 15.6 in*oz<br>Stall Current: 290mA<br> <br>Running at 6V:<br>Free running speed: 169rpm<br>Free running Current: 32mA<br>Stall Torque: 27.2 in*oz<br>Stall Current: 456mA<br> <br>Dimensions: 30.4 x 12.0 x 10.1mm <br>Shaft length: 9.3mm<br>Shaft diameter: 3mm<br>Centered 3mm output shaft<br>Weight: 9.3g<br>Ratio: 100:1<br>Starts at 0.43V @ 14mA<p>Check the other documentation for a measurements data sheet.</p></font>