Please contact us for the latest price! Processing range between 3 ~ 20 mm in diameter, very suitable for machining high speed steel, processed materials such as cast iron. Features: Hardness of HRC: 66-68 degrees. Can processing HRC70 degrees; can ensure the surface finish, the precision of work piece; On the heat treatment, hardness is 30 degrees of steel, cast iron, steel, stainless steel cutting; Long service life of the milling cutter, greatly improving the work efficiency, reduce the production cost; Can be widely used in all kinds of milling machine for cutting work.