DRLL BT 3-FLAT 5/16" 1PC *Brand Name: Diablo *Sub Brand: Metal Demon *Drill Size: 5/16 in. *Overall Length: 4.6 in. *Material: Stainless Steel *Product Type: Drill Bit *Shank Type: 3-Flat Shank *Number in Package: 1 pc *Packaging Type: Carded *Flute Length: 3 in.