IRWIN 3/8-in x 5.5-in Round Rotary drill Bit

Carbide tip has a unique diamond-ground, 4-facet design with sharper cutting edges for centered starts with no walking, fast drilling, and excellent hole quality in a variety of materials. Unique duo tone finish reduces resistance and increases heat dissipation for longer bit life and extended battery life in cordless drills. Double-milled flute ensures fast, efficient removal of drilling dust and debris to increase speed and prevent clogging.