Irwin Irwin 326009 Masonry Drill Bit 5/16 X4 X6

- 5/16 dia. x 6 length.; Carbide tipped; Fits all spline rotary hammers.; Flute geometry removes dust from the hole quicker for fast drilling and long life.; Copper braze material gives high heat resistance for reduced tip loss.; Shot peened double-tempered finish reduces breakage;