Micro Twist Drill High Precision List Number A6478TML-1.3 K30F Grade Solid Carbide TiN Finish Self-centering Drill Point (Deg.) 140 Decimal Equivalent 0.0512 Flute Length (In.) 7/16 Flute Length (mm) 11 Overall Length (In.) 2-11/64 Overall Length (mm) 55 Shank Dia (In.) 0.12 Steel Cast Iron NF Metals High Temperature Alloys and Titanium Alloys Hard Materials