Ensure the longevity and optimal performance of your RayTools fiber laser cutting head with the BesCutter D24.9X1.5 Optical Protective Lens. Specifically designed as a top protective window, this high-quality lens acts as a crucial barrier, safeguarding your inner laser head optics from damaging material splatter and airborne contaminants generated during the cutting process. Crafted from premium crystal and featuring a dual-sided anti-reflex coating, this lens maximizes laser beam transmission while providing robust protection, ultimately contributing to consistent and precise cutting results.