Our High Speed Steel Taper Shank Bridge Reamers are good for most general purpose applications, offering a combination of hardness and toughness for wear resistance. Black oxide treatment adds lubricity and creates small pockets on the surface of the tool that act to hold coolant near the cutting edge. Morse taper shank allows the tool to be inserted directly into the machine's spindle to facilitate high-torque applications such as large cut diameters. Straight flute tools allow chips to collect in the flutes as they cut and are well suited for most applications in shallow cuts. High Speed Steel Taper Shank Bridge Reamers have pilot type points for alignment purposes and easy entry into small and off-center holes.