Features of Quattro Mill: Range: 20 – 500 mm (.75"-20") The most positive and free cutting face mill on the market Modern, easy cutting geometry Combination of new geometries and grades give better tool life and performa......Features of Quattro Mill: Range: 20 – 500 mm (.75"-20") The most positive and free cutting face mill on the market Modern, easy cutting geometry Combination of new geometries and grades give better tool life and performance compared to competitors Trouble shooter