The FM5500 post hole digger is available with 6-in., 9-in., 12-in., and 14-in. augers. The FM5500 has a heavy-duty commercial gearbox with 3:1 gear ratio that develops 729 ft.-lbs. of torque at 180 r.p.m. All post hole diggers are shipped with safety shields mounted to gearboxes. Green Manufacturing, Div. of Benko Products, Inc., Sheffield Village, OH