Jobber Drill Blank: 4.65mm Size-Dia, 3 1/2 in Overall Lg, Bright (Uncoated) Finish

Metric high-speed steel drill bit blanks come in standard sizes expressed in millimeters. High-speed steel drill bit blanks are the most common choice for creating custom drill bits with precise dimensions to suit a certain application. They are less brittle than cobalt and carbide drill bit blanks.