Concentricity Concentricity Laser Module / Precision Laser Module Model : CLM-635-12 LPT Concentricity Laser Module / Precision Laser Module Model : CLM-635-11 LPO Concentricity Laser Module / Precision Laser Module Model : CLM-635-01 LPO Concentricity Laser Module / Precision Laser Module Model : CLM-635-02 LPT