Specification: Origin: Mainland China Type: Filter Set Model Number: ND Lens Filter Package: Yes Applicable models: for Insta360 GO 3/GO 2 Material: Aluminium frame + optical glass lens Product size: 18 x 4mm/10.71 x 0.16inch Filter set(optional): Mix and match filter 3pcs set: CPL+ND8+ND16 ND filter 4-piece set: ND4+ND8+ND16+ND32 Mix and match filter 4-piece set: MCUV + CPL + ND4 + ND8 Mix and match filter 6-piece set: MCUV + CPL + ND4 + ND8 + ND16 + ND32 Note: Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you! Please allow 1-2cm measuring deviation due to manual measurement. Included: 1/3/4/6pcs x ND Lens Filter 1. Multi-Coated Filters: This ND lens filter features multi-layer coatings that improve light transmission and reduce image distortion, resulting in high-quality images that accurately reflect the true colors of your subject. 2. German Optical Glass: The ND filter is made with professional-grade German optical glass, which produces clearer, sharper images. The high-quality glass ensures that you capture every detail of your subject. 3. Aircraft-Grade Aluminum Frame: The UV lens' frame is constructed from aircraft-grade aluminum and is CNC machined to ensure precise dimensions. The threads are also finely crafted to enable quick and easy installation and removal. 4. Neutral Density Effect: With a neutral density effect, this polarizer CPL reduces the amount of light entering the camera lens, allowing for slower shutter speeds and wider apertures. The result is more creative control over your shots, enabling you to capture stunning effects such as motion blur or shallow depth of field. 5. Portable and Durable: With its lightweight design and durable construction, this camera UV lens is the perfect accessory for any photographer. It's easy to carry with you on-the-go and can withstand harsh weather conditions, ensuring that you're always ready to capture your next great shot.