Wood Owl 1" Diameter x 7 1/2" Long Ultra Smooth Tri Cut Auger Hand Brace Boring Bit PTEE coated 09713 1 diameter x 7 1/2 long Patented Tri-Cut design with three precision ground cutting edges and three flutes engineered to optimize performance Cuts extremely smooth holes with minimal blowout on exit hole PTFE Teflon  coated to minimize friction and allow quick and easy chip ejection in the sticky woods Can be used with power drills and hand braces