The heavy duty EH-3A Paper Drill from Challenge delivers clean and precise drilling. The powerful hydraulic 3-spindle operation reduces operator fatigue. The EH-3A has a drilling capacity of 2.5 inches that handles 25% more stock per stroke. Automatic-return of the drilling heads minimizes contact between drill bits and blocks. This means longer bit life and longer intervals between sharpening. Get three perfectly aligned holes in a single stroke (with variable speed stroke control). Simply place a neat stack under the drills and watch as it And thanks to the automatic paper chip removal, users don’t have to tediously tidy the work area in between jobs or risk drill damage. It comes standard with 3 drilling heads that fit securely into the spindle, thanks to the taper-fit shank design.