The Dewalt DT70728 Black & Gold Metal Drilling Set featuring Toughcore which minimises breakages. The tapered central core increases stability and durability The Dewalt DT70728 Black & Gold Set offers 19 drills made from High-Speed Steel. The drill bits come in sizes: 1, 1.5, 2, 2.5, 3, 3.5, 4, 5, 5.5, 6, 7, 8 and 10mm. They are stored in a Connectable Tough Case compatible with the TSTAK System. Features: Small Tough Case System Set Connectable Case allows multiple sets to be stacked and locked together. TSTAK compatible to hold all your accessory sets in one place Compatible with the TSTAK system via the Caddy and Large Tough Case High Speed Steel - wear resistance and longer life Toughcore - tapered central core increases stability and durability, minimising breakage Speed Tip - fast start, precise centering and guidance. No walking including on curved surfaces No Spin Shank - 3 flat sides eliminates slipping in the chuck Contains: 19 x Black & Gold HSS-G Metal Drill Bits: 1 x 1mm 1 x 1.5mm 2 x 2mm 2 x 2.5mm 2 x 3mm 2 x 3.5mm 2 x 4mm 2 x 5mm 1 x 5.5mm 1 x 6mm 1 x 7mm 1 x 8mm 1 x 10mm