The frustration shared by many Pen Makers / Wood Turners is that a standard twist / brad point drill bit clogs up & snaps, or warps an exotic wood blank.  Many pen blanks are thrown out because of inadequate chip removal.  The flutes of a Fisch pen drill are noticeably different when compared to standard drill bit flutes.  With less clogging, better tip geometry and faster chip extraction, the heat created by the drilling process is dramatically decreased. The deep flute shape clears the chips without repeatedly having to back the bit out during the cut. No vibrations or wandering of the drill bit during the drilling process. Overall length is 150 mm.