Item Type: Action Camera Filter Material: Aluminum Alloy + Glass Color: As Shown Model: ND8, ND16, 6 Line Star Application: For HERO 9/10 Product Size: Filter Diameter: Approx.52mm/2.0in Weight: Approx.49g/1.7oz Package List 1 x ND Filter Kit (Adapter Ring + ND8 + ND16 + 6 Line STAR + Filter Cover) 1Helpful Feature: Filter surface is coated with dredge layer, easy to clean for saving energy, waterproof, antifouling, oil repellent and hydrophobic. 2Protective Silicone: Inner side of the adapter frame included in the packge is equipped with flexible silicone protective ring, which does not hurt the camera lens. 3Powerful Layer: Action camera filter has toughened layer, effectively prevent mirror scratch, scratch proof and wear resistant, protect the lens. 4ND Filter: ND filter is suitable for strong light environment, prevent overexposure and resist scattered light, increasing color saturation to make the picture more gorgeous and achieve fog water, night light track and other blockbuster style. The number after ND represents the dimming capacity. 5Star Filter: Star filter is a kind of luminous point as the center, after the diffraction effect of light and the formation of radiant effect, this is a kind of must have for stage or night shooting, can add an extraordinary feel to the picture.