SUPERIOR IMAGE QUALITY - Crafted from premium coated optical glass, these filters ensure crystal-clear footage, maintaining sharpness and color accuracy in all your action shots. ENHANCED DURABILITY - Built to withstand rigorous use, the robust construction and coating protect against scratches, dust, and water, ensuring long-lasting performance in any environment. VERSATILE COMPATIBILITY - Designed for GoPro HERO13/12/11/10/9 Black & Bones, these slide-on filters offer a secure fit, seamlessly integrating with your action camera for hassle-free use. OPTIMAL FILTER EFFECT - This ND filter set (ND4, ND8, ND16, ND32) reduces light from 2 to 5 stops, allowing you to capture stunning, cinematic footage with proper exposure in bright conditions.