10mm RF100U/HF 4FL Variable Helix, Plain Shank, Necked Carbide X-Long Coarse Rougher, Firex Coated, 22mm LOC, 48mm Reach 22MM LOC,10MM SHANK,100MM OAL RF 100 U/HF 4-Flute Right Hand 30?/32? Variable Helix, Right Hand Cut, Plain Cylindrical Shank, .30mm x 45? Corner Chamfer, Firex Coated, Extended Neck Relief, Center Cutting High Performance Extra Long Length Carbide Coarse Tooth Roughing End Mill For Roughing Alloyed Heat-Treatable Steels, Tool & Die Steels, Hardened Carbon & Alloyed Steels, Cast Iron, Titanium / Nickel Alloys & Other Special Alloys Up to 54 HRc Series 3598 Guhring Part #9035980100000