DeWALT DW5578 Drill Bit, 1/2 in Dia, 2-1/4 in OAL, Spiral Flute, 3/8 in Dia Shank, Round Shank

Featuring diamond-welded tips for long life and extreme durability, DeWALT tile drill bits power through dense tile, solid-body porcelain and more. Reverse-spiral threads enable continuous water cooling for quick, clean drilling. Core ejection slots remove plugs for repeated cuts.