The Manta III Core Drill Rigs Series features precision rack-&-pinion carriage with double-sealed bearings, 2 1/2-in. steel column with ceiling jack, a cast-aluminum base with built-in wheels, and positive anchoring for vertical and horizontal drilling. Bit capacity ranges from 1/2 to 14 in. while bit feed is 27 in. and the spindle ranges from 1 1/4 to 7 in. A removable slide handle allows for the unit to work close to walls and columns.