Set Contents. Counterbores - M3, M4, M5, M6, M8, M10. Pilot Drills - 3.5mm, 4.5mm, 6.5mm, 9.0mm, 11mm, Plain shank high speed steel counterbores. Polypropylene storage case, Liczba elementów = 12, Zakres rozmiarów gwintu = M3 - M10, Materiał = HSS, Zawart