HSS tap sets in a metal case, with taps according to DIN 352, for metric standard threads, 3-piece sets with pre-, middle and finishing cutters, 1 set each of M3-4-5-6-8-10-12, additionally with HSS twist drills (core hole drills) 2.5 - 3.3 - 4.2 - 5 - 6.8 - 8.5 - 10.2 mm Ø.