These DeWalt metal drill bit sets contain drill bits suitable for portable or stationary drilling of steel, alloyed and non-alloyed metal up to 900N/mm. They are particularly suited to drilling sheet or thin materials where accurate burr free holes are required and are very effective when working with wood and plastics. The patented split pilot point design eliminates walking/slipping on contact. Precision ground twist drill for rapid drilling, long life, and excellent concentricity. Manufactured from HSS Ground from solid stock right hand cutting, type N flute and a precision ground at 118? point angle. Drills above 13mm (1/2″) have a shank reduced to 12.7mm. Diameters: 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.