COBALT DRILL BIT 5/16" *Brand Name: Milwaukee *Sub Brand: Red Helix *Drill Size: 5/16 in. *Overall Length: 4-1/2 in. *Material: Steel *Style: Thunderbolt *Product Type: Drill Bit *Number in Package: 1 pc *Packaging Type: Carded *Shank Type: 3-Flat Shank *Flute Length: 3-3/16 in. *Finish: Cobalt Coated *Discovery ACC, CON, NBR, SUP, EXP