Faithfull Professional high speed steel (HSS) drill bits are manufactured from high quality M2 grade tool steel, to meet the requirements of the DIN 388 standard. Each bit has a fully ground flute and cutting tip, featuring a 135 degree point angle and split point providing easy non-slip starting and precision drilling. All these great features help you to achieve superior performance in most materials. Suitable for use in: Alloy Steels, Carbon Steels, Cast Iron, Hardened Alloy Steels, Stainless Steels. Supplied in heavy gauge metal storage case. Display packed.No. 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