Descriptions: 12V DC Metal Gear Reducer Motor High Torque DC Gear Box Motor  Specifications:<br>               Model               Material                   Voltage             (V)          No Load             At Max.Efficiency                          Stall          Size      (mm)           Speed    (RPM)       Current    (mA)       Speed    (RPM)       Current    (mA)       Torque    (kg.cm)       Torque    (kg.cm)                GM37-3525               Alloy Gear                   DC12.0               80          &amp;le;170                 60           &amp;le;450       4.0            25kg.cm          37*53                GM37-3525               Alloy Gear                   DC12.0               130          &amp;le;170             100              &amp;le;450       2.5            20kg.cm          37*50   <br>  Features: Small volume， torsion big， all metal gear， durable， not easy to wear. Application for Boat，Car，Electric Bicycle，Fan，Home Appliance.  Dimension Drawing:   Package Included: 1x DC Gear Motor