The Wera 848 HSS Metal Twist Drill Bit in 8.5mm is a specialist size frequently used for M10 tapping preparation and stepped drilling applications requiring an accurately-sized pilot or clearance hole in metal. The split point tip grips the workpiece immediately, preventing skating across the surface and ensuring every hole is drilled cleanly and accurately from the outset. High speed steel construction with finely-tuned material elasticity means this bit handles the significant torsional forces
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