Feature: 1. Frame is made of aviation‑grade aluminum alloy material, CNC precise processing, surface anodizing treatment, lettering, easy to install and take, made with high‑definition optical glass, durable. 2. The starlight mirror is a kind of luminous point as the center, which produces a radiant effect after the diffraction of light. 3. This is a must‑use effect mirror when shooting stage or night scenes. It can play an extraordinary role in the picture effect. 4. Adopting double‑sided multilayer nanometer coating technology, waterproof, scratch‑proof, and oil‑proof, the surface of the lens forms a protective layer similar to the surface of the leaf, water droplets and oil cannot be absorbed on the surface, easier to cleaning and maintain. 5. Star filter, suitable for GOPRO HERO9 action camera. Specification: Condition: 100% brand newItem type: Star FilterMaterial: Aluminum alloy + optical glassColor: blackFilter Size: Approx. 32x32x5mm/1.3x1.3x0.2inWeight: Approx. 47g . Package List: 1 x Star Filter