Description Innovative flute design leading to faster material removal for easier drilling. Used for tap con installation and brick/block fastening.Innovative flute design leading to faster material removal for easier drillingSpeed tip - penetrates material quickly1/4-in hex shank for use in impact driversUsed for tap con installation and brick/block fasteningBit Size: 5/32" X 4" X 6", 3/16" X 4" X 6", 1/4" X 4" X 6"