Tungsten Carbide SquareMilling Cutters aremade ofsolid carbidematerials, 45-65HRC, usually for high hardness metal machining, Meanwhile, we take Sandvik or Kenametal carbideto manufacture the carbide end mills, which have got very good reputation, especially for the high hardness metal processing. Here are the detail specifications, if you are interested in the end mills, please confirm the detail specifications and send it to me for the detail quotation. Thanks. Specifications D(mm)d(mm)I(mm)L(mm)1.043501.544502.046502.548503.038503.048503.5411504.0411501.063501.564502.066502.566503.068503.5611504.0611504.5613505.0513505.0613506.0615507.0820608.0820609.010257510.010257512.012307514.0144510016.0164510018.0184510020.02045100