Model DM2MECH can cut or drill up to 4 in. valves on copper, steel, or plastic pipe. It includes 7/16 in. hex arbor, 1/4 in. drill bit, 7 hole saws, Allen wrench, and plastic compartmental toolbox. Model DM2MECHB contains drilling machine and toolbox without hole saws or arbor. Machine requires 1/2 in. drill motor, valves, and fittings, sold separately.