This is a brand new electric gear motor that has extremely high torque to handle many heavy-load applications.  
The specifications are listed below:

Rated Voltage: 27 VDC
Rated Speed:  50 RPM
Rated Load:  60 Watts
Rated Torque:  
6 N-m (4.4 ft-lb)
Mounting:  M6 screw holes
Sprocket Standard:  ANSI/ISO #35 to fit roller chain #35 (Pitch 3/8", Roller Diameter 0.200", Roller Width 3/16")
Sprocket Thickness:  0.168"
Sprocket Number of Teeth:  10

This motor is ideal for machinery, automotive, or home/garage projects.