The PCD Notching Tools are changeable cutting inserts made of super hard Polycrystalline Diamond material (PCD) and applied for notching (milling) of hard-to-machine materials Like T.C Roll. Tools features high processing and high work efficiency. Notching is a metal-cutting process used on sheet-metal or thin bar-stock, sometimes on angle sections or tube. The process is used in a press, so as to cut vertically down and perpendicular to the surface, working from the edge of a work-piece. The PCD Notching Tools are very durable.