12mm High Feed HF300 Stub 4FL, Std Neck, Plain Shank Torus Ground Carbide Profile Coolant Cutter, 10mm LOC, 38mm Reach 10MM LOC,12MM SHANK,83MM OAL HIGH FEED HF 300 Right Hand 30? Helix, Right Hand Cut, 4 Stub Flutes, Standard 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. 2.00mm Radius Series 6771 Guhring Part #9067710120000