General description Faithfull Professional high speed steel (HSS) drill bits are manufactured from high-quality M2 grade tool steel, designed to meet the requirements of the DIN 338 standard. This set includes 25 drill bits ranging in size from 1mm to 13mm, featuring a fully ground flute and cutting tip with a 135-degree point angle and split point for easy non-slip starting and precision drilling. These features ensure superior performance in various materials, including alloy steels, carbon steels, cast iron, hardened alloy steels, and stainless steels. The drill bits are supplied in a heavy gauge metal storage case. Technical specifications Number of drills: 25 Sizes: 1, 1.5, 2, 2.5, 3, 3.5, 4, 4.5, 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 Material: M2 grade tool steel Other information