Tapcon 3/16" x 3-1/2" Concrete Drill Bit, made of steel with a straight shank, is designed for use with a standard impact driver and has a drilling depth of 2.25". It is suitable for drilling in brick and concrete. Manufactured with tighter tolerances than ANSI standards, carbide-tipped Tapcon Drill Bits are engineered to drill holes that deliver optimal performance when used with Tapcon Concrete Screw Anchors. Seamlessly use Tapcon Drill Bits with Tapcon anchors to ensure drilling precise holes and achieve maximum holding power. Tapcon Drill Bits prevent less breakage on the job.