Drill America 12-Piece #9 x 6-in Black Oxide Coated HSS Twist Drill Bit | DWDA/CX69P12

Drill America High Speed Steel Aircraft Extension Drills are good for most general-purpose applications. These drill bits offer 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. Extra-long for when extra reach is required.