Single fluted drills Overview Solid drilling tools in solid carbide design with brazed solid carbide tip with indexable inserts and guide pads Counterboring tools with brazed solid carbide tip Trepanning trepanning tools Pilot drills solid carbide guide hole drills Accessories sealing discs whipguide bushings drill bush holders clamping cones Grinding machines botek double grinding wheels botek grinding fixtures ZS botek grinding fixtures PS single-station grinding machines multi-station grinding machines	Type 110 - Single flute gundrill - 2 coolant holes diameter range: 7.060 - 51.200 mm - kidney-shaped coolant channel diameter range: 1.850 - 7.059 mm Type 111 - Single flute gundrill drill head made of a steel body with inserted carbide cutting blade and bearing pads - 1 coolant hole diameter range: 5.80 - 40.00 mm - 2 coolant holes diameter range: 40.01 - 60.00 mm Type 112 - Single flute gundrill Single flute stepped gundrill, with solid carbide tip (to produce precise stepped holes in one operation). Kidney-shaped coolant channel or 2 coolant holes depending on tool diameter diameter range: 2.00 - 51.20 mm