There is CNC Notching Arbor Collet mounts to the working side of a CNC lathe spindle in the same manner as a three-jaw chuck and uses the machines existing hydraulic cylinder and drawtube for actuation. It is a cnc tool holder for end mills, drills etc in a mill. They can also be used in a small micro lathe in the place of a chuck to clamp the work piece. The offered CNC Notching Arbor Collet is very efficient and durable.