You will receive 5 Pieces! FEATURE: Mateial: Quartz Size: 30mm*5mm Laser protection lens main role is to block debris splash, to prevent spatter injury lens. Both sides plated high damage threshold (> 15J/cm2)antireflection coating to reduce reflections. Featured Refinements Fiber Laser Thickness 5mm Model Protective Windows Country/Region of Manufacture China MPN Does Not Apply Brand cloudray Diameter 30mm .
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