? Taps and deburrs in one operation. Eliminates expensive secondary deburring. ? Deburrs the top of the tapped hole while the tap is being withdrawn from the work piece at standard 120?. ? No reversal cut in the chamfer due to tool cutting only in reverse. ? Creates a chamfer for easy screw insertion; leaves no burr to clog the tapped hole. ? Deburrs to consistent depth even though work pieces vary in thickness. ? No hazardous sharp burrs to cut fingers or snag clothing. ? Easy to install; simply slips over your tap. ? Resharpenable with simple radial relief grinding fixture. ? Taps not included. ? Available up to size 1?1/4 and in metric sizes ? Also available in 90? based on P.O.A.