Order 501315900 by Vermont Gage #21 x 3-1/4" HSS Drill Blank - US Mega Store

<p><strong>Features:</strong></p><ul><li>High Speed Tool Steel; 62/65 Rc</li><li>Jobber lengths</li><li>10 microinch finish or better</li><li>Marked with size</li></ul><p>Wire-size high-speed steel drill bit blanks come in standard sizes that correspond to American Wire Gauge (AWG) sizes. This ensure compatibility when inserting a wire of the same wire size into the hole created by the tool. The larger the wire size, the smaller the blank. 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.</p>