Material Number 6945887ISO Catalog ID W4NBM10005RBTGrade WU20PEAdapter Style Machine Side Straight-Cylindrical[D1] Effective Cutting Diameter 10 mm[D] Adapter / Shank / Bore Diameter 10 mm[D3] Neck Diameter 9.4 mm[AP1MAX] 1st Maximum Cutting Depth 22 mm[L] Overall Length 72 mm[L3] Usable Length 32 mm[Z] Number of Flutes 4