1、Optical Glass Lens: The lens adopts optical glass, high definition grinding treatment, high light transmittance. Adopting coating light reduction process, almost no color cast. 2、Multilayer Coating: Double sided multilayer nanometer coating technology, the lens has waterproof, oil proof, anti fouling, and anti scratch performance. 3、Block Light Ability: The number behind ND represents the ability of the ND lens filters to block light. Perfectly suitable for DJI Action 2 camera. 4、Main Function: This filter combines the advantages of ND filter and PL polarizer, can prevent overexposure, resist scattered light, reduce shutter speed, extend exposure time, eliminate reflections, increase saturation, and bring more creative space for photography creation. 5、Lightweight and Small: The product is small in size and light in weight, easy to carry, with a storage box, which can be carried in a pocket or backpack. Item Type: Lens Filter Material: Aluminum Alloy + Optical Glass Color: As Pictures Shown Weight: Approx. 60g / 2.1oz Applicable Models: for DJI Action 2 Camera 1 x ND8-PL Lens Filter 1 x ND16-PL Lens Filter 1 x ND32-PL Lens Filter 1 x ND64-PL Lens Filter