Feature 1 The ND filter reduces the incoming light without affecting the color, allowing for better control of the aperture, exposure time and sensor sensitivity settings. 2 Optical glass has good light transmittance and can record video in high definition while producing a shallower depth of field or obtaining sharper photos. 3 It is waterproof, oil and scratch resistance, reducing fingerprint fog, ensuring a low refractive index and excellent color neutralization. 4 ND filter has small size, and it is easy to carry. Taking out and installing it can be used, there is no doubt that it is fast and save labor. 5 Made of high quality aluminum alloy material, durable, sturdy and lightweight.Item Type: Sports Camera Filters SetWeight: Approx.15g / 0.5ozMaterial: Aluminum AlloyApplicable Model: Suitable For Gopro 9 Package List1 x ND Filter