Ultra Smooth Auger Bit. Patented Tri-Cut design (US Pat.# D504,446 ) which consists of three precision ground cutting edges and three flutes engineered for optimum performance. Unique head utilizes cutting spurs to scribe and bore extremely smooth holes with minimal blowout. 25-25% lighter than standard ship auger to reduce fatigue from extend use. PTFE coated to minimize friction and allow quick, easy cutting and chip ejection in the stickiest wood.