Description Innovative flute design leading to faster material removal for easier drilling. Used for tap con installation and brick/block fastening.The product is 5PC Multi Drill Bit SetEasy to useThe product is manufactured in United StatesAggressive Flute Angles for Faster Drilling SpeedNo Spin Shank Eliminates Bit SlippageSet of 5 Varying Size BitsDimensions: 2.88 x 0.63 x 6.19 inches