Product selling points: 1.optical glass, precision grinding and polishing, high-definition imaging; 2.Adopting a double-sided multi-layer nano coating process, endowing the lens with high-quality waterproof, oil resistant, stain resistant, and scratch resistant performance; 3.Made of aluminum frame material, the logo is engraved and , with a dark surface frame to prevent light leakage and ghosting; 4.The /ND is adjustable, and the light can be adjusted by rotating the gear to select the appropriate luminosity for ; 5.A magnetic absorption nano box specially designed for the filters, equipped with a soft sponge inside to prevent the fixed filters from falling off, making it portable for long-distance travel. Name: Suitable for AIR 2S Filter Series Applicable model: AIR 2S matters needing attention: 1.Only UV filters can transmit light by 98.5%, while /ND- filters cannot be represented by transmittance; 2.Only /ND- filters can be adjusted, and other filters cannot be adjusted; 3.Only the set filter storage box has a magnetic suction design, while the single product filter storage box does not have a magnetic suction design; 4.The single item storage box and the set storage box are different. pay attention purchasing (single filter non magnetic packaging box). Material: Aluminum alloy (frame)+optical glass colour: grey Package Contents: 4 x Filter 1 x Cleaning cloth 1 x Storage box 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.