Wolverine Skid Steer Auger Drive & Bit ADB-13-1218R. This auction includes the Auger Drive & Bit, engineered with an 'In-Line' drive design. It has auger dimensions of 12 in and 18 in and a working depth of 38 inches. Hydraulic flow required is 8-22 GPM, and the Max. Cont. Operating PSI is 3000 psi.