Irwin 61112 Drill Bit, 3/16 in Dia, 4 in OAL, Spiral Flute, 1-Flute, 3/16 in Dia Shank, Straight Shank
Rotary percussion bits made of chrome vanadium shaft through hardened to 50-53HrC. Shot-peened, double tempered finish reduces breakage, copper braze material gives high heat resistance and flute geometry removes dust from the hole quicker for fast drilling and long life. Used in applications such as rotary drilling in concrete, brick and masonry.
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