High Speed Steel Fractional Hole Enlarging, 9/16 in-1 in, 8 Steps

Features: Single-flute cutting edge for greater control through steps | 3 flatted shank prevents slipping in drill chuck | Also available with titanium nitride coating for longer life | Patented single-flute cutting edge gives the user a true round hole every time | Ideal for drilling holes into thin materials such as stainless steel, copper, brass, aluminum, plastic and laminates | Pilot hole required