Features: This DC motor features large moment of force, low speed, and low noise. The gear motor is primarily designed to reduce speed in a series of gears, which in turn creates more moment of force. Applications: perfect for window opener, door opener, mini windlass etc. This motor is adopted of pure copper wire coil, with low heat and low loss. The motor is made of metal gear, wear-resisting, avoid tooth breaking, so with long serving life. Specification: Material: metal Model: GM25-310 Product type: brush dc motor Rated voltage:12 (V) Rated power: 2 (W) Speed:30/70/100/500RMP (Optional) Size: 6*2.5cm/2.4*1in Weight: Approx.73g/2.6oz Voltage Gear ratio No load Load Stall Speed(Optional) Current Speed Current Moment of force Current Moment of force 12V 1:300 30RPM ≤150mA 28RPM ≤17mA 850g.cm ≤2.1A 6.4kg.cm 12V 1:150 70RPM ≤170mA 65RPM ≤155mA 680g.cm ≤2.1A 5.8kg.cm 12V 1:90 100RPM ≤170mA 91RPM ≤150mA 550g.cm ≤2.1A 4.8kg.cm 12V 1:18 500RPM ≤180mA 455RPM ≤185mA 380g.cm ≤2.1A This DC motor features large moment of force, low speed, and low noise. The gear motor is primarily designed to reduce speed in a series of gears, which in turn creates more moment of force. Applications: perfect for window opener, door opener, mini windlass etc. This motor is adopted of pure copper wire coil, with low heat and low loss. The motor is made of metal gear, wear-resisting, avoid tooth breaking, so with long serving life.