A comprehensive, trade use set of De Walt HSS drill bits, all housed in a useful & robust storage case. These finest top quality bits can be used to drill a wide range of materials including steel, alloyed & non-alloyed, up to 900N/mm-square, sheet & thin materials (especially where accurate burr free holes are required), plastic & most hard, soft & processed timbers. Diameters mm 1, 1.5, 2, 2.5, 3, 3.2, 3.3, 3.5, 4, 4.2, 4.5, 4.8, 5, 5.5, 6, 6.5, 7, 7.5, 8, 8.5, 9, 9.5, 10, 10.5, 11, 11.5, 12, 12.5, 13 mm