Solid Carbide Drill High Precision K3281TFT-1/2IN Number of Pieces 1 K30F Grade Solid Carbide TFT - TiNAl Finish Self-Centering Point Drill Point (Deg.) 150 Fractional Size (In.) 1/2 Flute Length (In.) 1.102362 Flute Length (mm) 28 Overall Length (In.) 4.527559 Overall Length (mm) 115 Shank Dia (In.) 0.629921 Shank Dia (mm) 16