Motor with metal gearbox, for the most extreme forces.TECHNICAL DATA:- Rated voltage (V) : 3- Voltage range (V) : 0,3 - 6- Speed (rpm) : 30 - 400- Gear ratio : 1:50- Dimensions (mm) : 29 x 12 x 10- Weight (g) : 8- Axle diameter (mm) : 3- Axle length (mm) : 8- Mounting holes 2 x M1.6