DeWalt DT5921 Extreme Metal Drill Bit Set, 10 PieceDeWALT DT5921QZ Extreme Metal Drill Bit Set Precision Metal Drilling (110 mm) Tackle drilling in steel, cast iron, nickel, brass, and more with the DeWALT DT5921QZ 10Piece Extreme Metal Drill Bit Set. Precision engineered from high speed steel (HSSG) to DIN 338 standards, these bits are designed to provide fast, burr free holes up to 900 N mm with a patented split pilot point to eliminate walking and ensure accuracy. Available now at Keans