Feature: 1. PREMIUM MATERIAL: The frame is made of lightweight aviation aluminum, CNC machined for high accuracy fit, lightweight and sturdy erosion resistance, rugged, longer service life, no fading and no rust. 2. NANO COATING: CPL lens filters adopt double sided multi layer nano coating process, which gives the lenses premium performance, prevents the surface of the filters from being scratched, and improves the light transmittance of the filters themselves, which effectively reduces the reflection and refraction of light. 3. PROFESSIONAL OPTICAL GLASS: CPL filters are made of high definition professional optical glass with high durability and scratch resistance, which ensures clear imaging and meets the standard of high pixel imaging during shooting. 4. SUPERIOR PERFORMANCE: Polarizer can eliminate non metallic reflections, enhance color saturation, make the image more transparent, restore the true colors, make the sky bluer and the water clearer, and also often used in shooting the scene behind the glass, clear and transparent water and underwater creatures. 5. EASY INSTALLATION: If you purchase for GR3X series front magnetic adapter ring, you can use this magnetic filter, quickly mounted on the camera lens, convenient for you to change the filter at any time when you shoot. Specification: Item Type: CPL Lens Filters Material: Aluminum Alloy, Optical Glass Interface: Approx. 49mm/1.93in Applicable Models: for Ricoh GR2 GR3 GR3X and Other Cameras Light Transmittance: 99 Percent . Package List: 1 x Filter 1 x Storage Box