4mm 2FL Torus Grind HSC Profile Cutter, Carbide, Plain Cylindrical Shank, nano-Si Coated, 52mm Reach, .5mm Radius 8MM LOC,4MM SHANK,80MM OAL GF 500 T HSC (High Speed Cutting) trace milling 2 Flute profile cutters with Torus form, Plain Cylindrical Shank, Right Hand 30? Helix, Right Hand Cut Center Cutting Carbide, nano-Si Coated. For precision contouring and die & mold work. Performs roughing, finishing, ramping, helical interpolation and copy milling in alloyed steels, free cutting steels, tool steels, stainless steels, titanium and Ti-alloys, cast iron, brass, bronze, hardened steels 40 - 54 HRc and special alloys. 0.50mm Radius Series 3863 Guhring Part #9038630040000