4mm High Feed HF300 Stub 4FL, XL Neck, Plain Shank Torus Ground Carbide Profile Cutter, 3mm LOC, 32mm Reach 3MM LOC,6MM SHANK,80MM OAL HIGH FEED HF 300 Right Hand 30? Helix, Right Hand Cut, 4 Stub Flutes, Extra Long Extended Neck Relief, Plain Cylindrical Shank, Non-Center Cutting Torus Ground Carbide nano-Si Coated Profile Cutter. Diameters over 5mm are Coolant Though. For High Speed Roughing, Ramping, Helical Interpolation, Copy Milling and Pre-Finishing Steels, Cast Iron and Hardened Steels to 60 HRc. With Coolant Through These Tools are Also Suitable for Stainless Steels, Nickel Alloys and Titanium Alloys. 0.80mm Radius Series 6772 Guhring Part #9067720040000