Style:Drill Bit Set The IRWIN Metal Countersink Drill BitSet features precision ground 82 tips for countersinking most machinablemetals, wood, and plastic. Made from industrial grade high-speed steel forincreased durability, each countersink has a black oxide coating to resistcorrosion and a five-flute design that reduces vibration for smoother drillingand an extended life. Set includes 1/4′, 3/8′, 1/2′, 5/8′, and 3/4’countersinks, and a drawer Case From the Manufacturer IRWIN High Speed SteelCountersinks feature a precision-ground 82-degree tip that makes them idealfor countersinking into most machinable metals. They’re made from industrialgrade high speed steel for increased durability, and they include a blackoxide finish for added corrosion resistance. The five flute design reducesvibration for smoother drilling and extended life. Plus, the 1/4′ round shankfits all handheld and stationary drills.
