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.