3/16x3" MASONRY DRILL BIT DW5222

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. Fits all hammer drills with 3-jaw or Jacobs chuck. Used in applications such as rotary drilling in concrete, brick and masonry.