There are two types of this motor to choose from-left hand or right hand, and with our without a pinion on the output. This motor would be great for driving a chain or even a wheel directly in the middle to small weight classes. This is one of the fastest of the AME gearmotors available, at 100 RPMs -Which is a great speed to have a robot's drive gearmotor run, and makes for some very simple math!
Left Hand Version
10 Nm stall torque
12 V reversible
85 no-load oscillations per minute
10 mm shaft with double flats
1.3 pounds
AME-210-1010
Dimensions 
Rhino v1.1 File IGES File