Material Number 1913567ISO Catalog ID B977A04000Grade KCU15[D1] Drill Diameter M 4 mm[L] Overall Length 74 mm[L3] Flute Length 36 mm[L4] Maximum Drilling Depth 29 mm[L5] Drill Point Length 0.66 mm[LS] Shank Length 36 mm[D] Adapter / Shank / Bore Diameter 6 mm