PTO Augers Manufacturing the industry leading “Cadillac” of post hole diggers since 1943 Model F8 "The Cadillac" of post hole diggers. 100% American made featuring a spiral bevel ring gear and pinion delivering 1,813 ft.-lbs. of torque. For Tractors with 40 HP and above Category I or II 3-pt hitch 30" maximum diameter auger Model J20/80 100% American made featuring straight bevel ring gear and pinion delivering 1,014 ft.-lbs. of torque. For Tractors with 20-80 HP Category I or II 3-pt hitch 24" maximum diameter auger Model G20/40 100% American made featuring straight bevel ring gear and pinion delivering 1,014 ft.-lbs. of torque. For Tractors with 20-40 HP Category I 3-pt hitch 24" maximum diameter auger