For when you need a little extra room, the Trend TRESNAP/TD/2 Taper Drill expands the point.
The Trend SNAP/TD/2 taper drill is ideal for drilling & enlarging holes in all metals, plastics & timbers, featuring a 1/4" hex shank, it will enlarge holes from 3mm to 14mm
Part of the Trend Snappy quick release drill system, the quick chuck is fitted into the drill. Snappy attachments "snap" into the quick chuck. Spring loaded outer sleeve makes it easy to remove attachments.