1.filter set specifically made for Air 3 drone lens, neutral density filter drone lens accessory, multi-coated HD optical glass, reduces the amount of light, allowing the camera to select the correct exposure value and prevent overexposure. 2.Aluminum Alloy Frame Ultralight Designed, which is light enough to that each filter frame goes through a rigorous test without adversely affecting your drone gimbal, stable use for a long time flight. 3.Air 3 filter set double-sided, multi-layer nano-coating process can reduce glare and protect for air 3 lens, ensuring accurate color reproduction. 4.filter made of high-definition optical glass, optics ensures color neutrality, ensuring your content with perfection. Polarizer filter helps glare from non-metallic surfaces, and ND filter enables longer exposures to capture the beauty of time and motion. Colour:black Material:Aluminum alloy + glass Specifications:A:Four-piece set Package Contents: 1 x ND8 Filters 1 x ND16 Filters 1 x ND32 Filters 1 x ND64 Filters Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.