CONCENTRIC® Face Drivers to suit Turning, Milling or Grinding. Clamping between centres in CNC Turning Centre, Gear Hobbing Operation, Gear Shaving Operation so that the entire surface of work piece can be machined in one set up. Optimize production flow and reduce manufacturing costs with low cost solution. Benifit of using CONCENTRIC® Face Drivers. 1. maximum of torque transmission, thus achieving a high rate of metal removing. 2. fixed clamping location. 3. run-out deviation max.: 0.002 - 0.01 mm. 4. face drivers with fixed center pin. 5. low setup costs due to fast change of drive disks and center pins. 6. high flexibility in the application, wide range of clamping diameters.