585-326006 Features: -Fits all hammer drills with 3-jaw chuck. -Chrome vanadium shaft through-hardened to 50-53HrC. -Patented flute geometry removes dust from the hole quicker for fast drilling and long life. -Up to 150% faster than other competitive bits. Number Of Bits: -1. Dimensions: Overall Product Weight: -0. 08 Pounds.

From the Manufacturer
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Made to ANSI specifications, the IRWIN 326005 – 1/4 x 4 x 6 Straight Shank Masonry Bit is the next generation straight shank hammer drill bit which delivers more performance than ever. The patented flute design speeds dust removal for fast drilling and long life, while the shot-peened finish increases surface durability reducing the potential for breakage. This offering of straight shank masonry bits demonstrated IRWINs commitment to the line and the professions who rely on them.