BLUE DIAMOND, EX4 AUGER Auger, Blue Diamond EX4 Extreme Duty Series 2 Auger Torque ft-lbs @ 3000 Psi .3275 Max Torque ft-lbs 3500 Psi .3821 Recommended Flow (GPM) ..10-30 Peak Efficiency (GPM) ..19-23 Motor Type .Eaton Max Pressure Do Not Exceed ..3500 psi @ 16 gpm Max Flow Do Not Exceed 30 gpm @ 1800 psi Standard Output Shaft ..2 Hex Max Drilling Diameter Clay/Shale ..24 Max Drilling Diameter Earth .30 Weight .123lbs Compact high torque manufactured gearbox 2 piece shaft design ensuring maximum side load ratings 5-yr gearbox warranty, 3-yr motor warranty, and lifetime shaft pull-out warranty, Attachment, Serial Number: