IRWIN Countersink Drill Bit Set - Industrial Grade High Speed Steel 5 Piece

Product DescriptionThe IRWIN TOOLS Metal Countersink Drill Bit Set features precision ground 82 tips for countersinking most machinable metals wood and plastic. Made from industrial grade high-speed steel for increased durability each countersink has a black oxide coating to resist corrosion and a five-flute design that reduces vibration for smoother drilling and an extended life. Set includes 1/4"" 3/8"" 1/2"" 5/8"" and 3/4"" countersinks and a drawer CaseFrom the ManufacturerIRWIN High Speed Steel Countersinks feature a precision-ground 82-degree tip that makes them ideal for countersinking into most machinable metals. They're made from industrial grade high speed steel for increased durability and they include a black oxide finish for added corrosion resistance. The five flute design reduces vibration for smoother drilling and extended life. Plus the 1/4"" round shank fits all handheld and stationary drills.