6mm RF100U 4FL Variable Helix Firex Carbide End Mill, Necked, Plain Shank, 2.0mm Radius, 13mm LOC, 20mm Reach 13MM LOC,6MM SHANK,57MM OAL RF 100 U 4-Flute Right Hand 35?/38? Variable Helix, Right Hand Cut, Plain Cylindrical Shank, 2.00mm Corner Radius, Firex Coated, Extended Neck Relief, Center Cutting High Performance Standard Length Carbide End Mill For Roughing and Finishing Alloyed Steels, Cast Iron, Free Cutting Steels, Tool Steels, Hardened Steels, Titanium and Titanium Alloys & Other Special Alloys Up to 54 HRc Series 3872 Guhring Part #9038720060200