Dewalt DT5066 QZ Extreme 2 Metal Drill Bit, 5.4 mm Diameter, 93 Length

Innovative tapered web greatly reduces breakage No-Slip shank with 3 flats eliminates slipping in the chuck (diameters 5.0mm and above only) Permanent size markings located above the shank for increased visibility Faster drilling - up to 4x faster than standard HSS-R drill bits Increased durability - up to 50% stronger than standard HSS-R drill bits Innovative tapered web greatly reduces breakage Permanent size markings located above the shank Cleaner, more accurate, burr-free holes