Tapcon 4-Pack 5/32" x 4-1/2" Concrete Drill Bit is a self-feeding drill bit. The bit has a straight shank and is made of steel. It has a drilling depth of 2.5" and a bit diameter of 5/32". The bit is also impact driver capable. Manufactured with tighter tolerances than ANSI standards, Tapcon Carbide-tipped 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.