Sizes: 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 and 13mm. Whether you are a professional tradesman or DIY enthusiast, the drill bits are ideal for portable drilling of steel, alloyed and non-alloyed up to 900N/mm², and for drilling a sheet or thin materials where accurate burr-free holes are required and very effective when working with wood and plastic materials.