Dewalt DT70710 Extreme 2 Metal Drill Bit Set (13 Piece) The Dewalt DT70710 is a 13 piece drill bit set for metal, containing bits ranging in size from 1.5-7mm. These drill bits are from the Extreme 2 range, meaning they are long-lasting and durable in steel and alloyed & non-alloyed sheet metal drilling applications. Other features include no walk drill tips, cleaner, burr-free holes thanks to their recessed cutting wings and they are 50% stronger than HSS-R drill bits. This 13 piece set comes in a ToughCase which can be slotted into TSTAK caddies. Features: 13 piece drill bit set for metal - ideal for drilling in steel, alloyed & non-alloyed sheet metal or other thin materials Up to 50% stronger than HSS-R drill bits Up to 4 x faster than HSS-R drill bits Gold ferrous oxide coating prevents overheating No-walk drill tips Supplied in a ToughCase which can be slotted into TSTAK caddies Contains: Drill bit sizes: 1.5, 2, 2.5, 3, 3.2, 3.5, 4, 4.5, 5, 5.5, 6, 6.5 and 7mm Specification: Pack Qty: 13 Piece