Specifications: Material: Aluminium (frame) + Optical glass Applicable models: for Avata/DJI O3 Air Unit Color: Black Net weight: 0.02oz.(0.7g).(Single), 0.07oz.(2.2g).(3 Set),0.1oz.(2.9g),(4 Set).0.14oz.(4.1g),(6 Set) Package weight: 0.87oz.(25.1g).(Single),1.94oz.(55.5g),(4 Set).1.97oz.(56.3g),(6 Set) Product size:0.9*0.74*0.03in(2.3*1.9*0.1cm) Package size: 2.55*2.55*0.78in(6.5*6.5*2cm).(Single), 3.93*3.14*0.78in(10*8*2cm).(Set) Features: 1. optical glass, precision polished and polished for high definition imaging. 2. multi-layer nano-coating process, giving the lens high quality waterproof, oil-proof, dirt-proof and scratch-proof performance. 3. aerospace aluminium frame with laser engraved logo and matte black frame to prevent ghosting. 4. a magnetic storage case for the set of filters, with a soft sponge inside to hold the filters in place so that they do not fall out, allowing you to carry them far. 5. The top and bottom of the filter, as well as the left and right side, are equipped with clips for easy installation and are less likely to fall out when flying. Cautions: 1. Only UV filters can transmit 98.5% of light, CPL/NDfilters cannot be expressed in terms of light transmission. 2. Please note that the single product is in a plastic storage box and the set is in a magnetic storage box (individual filters are not in a magnetic box). 3. Lenses may vary in colour depending on the angle of light. 4. the installation and disassembly will touch the lens and leave fingerprints, use a cleaning cloth to wipe the lens. Package Included: 1pcs Filters Cleaning instructions: If the lenses are contaminated with dust, water droplets or other contaminants, whether or not they have been eliminated, please remember the following instructions for use: 1. blow off any dust on the surface of the lenses first. 2. clean them again with a clean brush. 3. wipe gently with the filter cleaning cloth delivered. 4. use a special lens cleaning solution for better results. 5. Keep in the special storage box when not in use. Note: 1.Does not include Drone and DJI O3 Air Unit, 2.Transition: 1cm=10mm=0.39inch, 3.Since the size and weight are manually measured, due to different measurement methods, there may be a certain error between the weight and size of the product, but this error does not affect the normal use of the product, please confirm that you know and accept the error before purchasing,, 4.Due to the difference between different monitors, the picture may not reflect the actual color of the item,please make sure you do not mind before ordering, Thank you