Tapcon 3/16" x 4-1/2" Concrete Drill Bit, made of steel with a straight shank, is designed for drilling in brick and concrete. Manufactured with tighter tolerances than ANSI standards, Tapcon Drill Bits ensure precise holes for optimal performance when used with Tapcon Concrete Screw Anchors. By seamlessly using Tapcon Drill Bits with Tapcon anchors, you can achieve maximum holding power and secure your projects with confidence.