Stand Up Core DrillThis contractor series large base stand features a cast aluminum base with 4 leveling screws for fast accurate leveling adjustment. The durable precision ground 2 1 2 in. steel column is 43 1 2 in. high and has a universal motor adapter plate. The reversible feed handle helps the operator use the unit from either side. Model 4120 22 comes with model 4096 coring motor, Vac U Rig kit as well as a meter box. The Vac U Rig assembly uses a vacuum pump to