These are multiple application jobber drills. The design includes a unique multi-layer coating, split point and modified web construction. These aspects allow you a wider **** of applications, reduced thrust requirements and increase rigidity. The set covers sizes 1 to 13mm in 0.5mm steps, comprising 25 drill bits in total. They come in a robust ABS moulded case (an improvement on a rattling tin box) with individual slots for each size. The case has a secure catch and when opened displays the contents for easy selection. Made to DIN 338, these drills are high quality HSS, suitable for drilling into steels, cast iron, soft aluminium and plastics.