4.5mm Diver 3FL Variable Helix Necked Carbide End Mill, Plain Cylindrical Shank, Nano-Si Coated, 11mm LOC, 18mm Reach 11MM LOC,6MM SHANK,57MM OAL RF 100 Diver 3 Flute, Right Hand 41?/43?/45? Variable Helix, Right Hand Cut, Plain Cylindrical Shank, Extended Neck Relief Center Cutting Carbide End Mill with .07mm x 45? Corner Chamfer for High Performance Ramping, Slotting, Plunging, Helical Interpolation Roughing & Finishing Steel, Stainless Steel, Cast Iron, Nickel/Titanium Alloys & Aluminum Series 6797 Guhring Part #9067970045000