Harvey Tool FBD1093-C3 | 2.778mm Diameter x 4.000mm Shank x 63.000mm OAL 180 Degree Drill Point AlTiN Coated Solid Carbide Micro Drill BitFeatures Flat bottom design (no point angle and no dish) allows for drilling on irregular surfaces and reduces burrs on break through Ideal for drilling on inclined and rounded surfaces, creating flat bottom holes, tilted drilling for angled holes, and drilling intersecting holes, half holes, shoulders, or thin plates h6 tolerance for high precision tool holders Solid carbide CNC ground in the USA Product Specifications Drill Diameter (mm) 2. 778mm