IRWIN 5-Pack Assorted Black Oxide Coated HSS Right Handed Twist Drill Bit Set

The IRWIN 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-in, 3/8-in, 1/2-in, 5/8-in, and 3/4-in countersinks, and a drawer case.