Irwin 326003 3/16 X 4-1/2 X 6 Straight Shank Masonry Bit

Fits all hammer drills with 3-jaw or Jacobs chuckChrome vanadium shaft through-hardened to 50-53HrCPatented flute geometry removes dust from the hole quicker for fast drilling and long lifeUp to 150% faster than other competitive bitsShot-peened, double-tempered finish reduces breakageHot isostatically pressed to extend life and resist breakageCopper braze material gives high heat resistance for reduced tip lossAll tips made to ANSI specifications
Diameter- 3/16″ Twist Length- 4-1/2″ Overall Length- 6″