Material Number 1913568ISO Catalog ID B977A04200Grade KCU15[D1] Drill Diameter M 4.2 mm[L] Overall Length 74 mm[L3] Flute Length 36 mm[L4] Maximum Drilling Depth 29 mm[L5] Drill Point Length 0.69 mm[LS] Shank Length 36 mm[D] Adapter / Shank / Bore Diameter 6 mm