Small speed reducing motor with metal gearbox increases torque. Micro-gearbox motor for DIY RC Hobby, vehicles, drones, planes and more. Mini dc gear motor is small and lightweight to easily mount a wheel on the motor's output shaft or copter blade. Model - Working Voltage - Output Speed - Gearbox Size: JGA12-N20 - DC 6V - 39/100/150/300/500RPM - 17 x 11.9 x 10mm/0.67 x 0.47 x 0.39 inch(L*W*H) JGA12-N20-1000 - DC 6V - 15RPM - 17 x 11.9 x 10mm/0.67 x 0.47 x 0.39 inch(L*W*H) JGA12-N20 - DC 12V - 100RPM - 17 x 11.9 x 10mm/0.67 x 0.47 x 0.39 inch(L*W*H) JGA12-N30 - DC 6V - 23/33/47/235RPM - 22 x 10 x 12mm/0.87 x 0.39 x 0.47 inch(L*W*H) JGA12-N30 - DC 12V - 140RPM - 22 x 10 x 12mm/0.87 x 0.39 x 0.47 inch(L*W*H) JG12-N20 - DC 12V - 300/600/1000 RPM - 15 x 12 x 10mm/0.59 x 0.47 x 0.39inch(L*W*H) Motor Size: 11.9 x 9.8 x 8.8mm/0.47 x 0.39 x 0.35 inch(L*W*H) Shaft Diameter: 3mm/ 0.12 inch Shaft Length: 10mm/0.39 inch Weight: 9g Main Color: Silver Material: Metal Package Contents: 1 x Mini Gear Motor Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.