5/16" (Approx 8mm) - German Import - Style A - Challenge EH / MS / HandyDrill Drill Bit - 3.5" Overall Length - 2.5" Capacity - 1 ea. - 2071 CD-5-2-1/2 / DBA5-16L

These premium hollow-spindle drill bits are designed specifically for your CHALLENGE EH/MS/HandyDrill drills.  These bits are a consumable item, and should be either re-sharpened or replaced periodically.