16mm RF100F90? 4FL Variable Helix Necked Plain Cylindrical Shank nano-A Coated Carbide End Mill, 32mm LOC, 42mm Reach 32MM LOC,16MM SHANK,92MM OAL RF 100 F 90? 4-Flute Right Hand 40?/42? Variable Helix, Right Hand Cut, Plain Cylindrical Shank, Extended Neck Relief, Standard Length, High Performance Center Cutting Carbide End Mill with 90? Sharp Corners, Nano-A Coated for Roughing, Slotting, Ramping, Helical Interpolation and Finishing Materials up to 30 HRc. Mild and Free-Cutting Steels, Unalloyed Heat-Treatable & Case Hardened Steels, Nitriding Steels, Stainless Steels, Grey Cast Iron, Copper, Brass, Bronze , Magnesium Alloys and Titanium Alloys. Series 6764 Guhring Part #9067640160000