These Wood Owl Ultra Smooth Tri-Cut auger bits have a patented Tri-Cut design that consists of three precision ground cutting edges and three flutes engineered to optimize drilling performance. This unique Tri-Cut design has cutting spurs that score the outside of the cut leading to extremely smooth holes with minimal blowout. These bits are 25-35% lighter than standard auger bits of similar size reducing fatigue from extended use. The precision cut lead screw will pull the bits straight and true through material without wandering These bits come PTEE coated to minimize friction and allow quick and easy cutting and chip ejection in the stickiest of woods. These bits can be used in cordless drills and hand braces. These bits are made from fully induction hardened high carbon steel for strength and durability. The bits feature 7/16” quick release hex shanks. Bits come in a plastic storage tube to protect when not in use. Warning: This product can expose you to chemicals which is [are] known to the State of California to cause cancer and birth defects or other reproductive harm.