Description: Using high quality optical glass lenses, with stable optical properties and high optical homogeneity. Multi-layer coating films and high transmittance. Compatible for DJI Mavic Air 2S Drone Easy to install without any instruction. Made of high quality plastic material, durable to use. Specification: Material: Plastic (frame) + optical glass(lens) Size: 105x95x15mm Package Includes: (Optional) A: 3 Pieces Filters(CPL ND8 ND16) B: 4 Pieces Filters(UV CPL ND16 ND32) C: 4 Pieces Filters(ND8PL ND16PL ND32PL ND64PL) D: 6 Pieces Filters(UV CPL ND4 ND8 ND16 ND32) E: 8 Pieces Filters(UV CPL ND8 ND16 ND32 ND64 STAR Night) Note: Conversion: 1inch=2.54cm, 1cm=0.393inch Please allow slightly 0-1cm difference due to manual measurement. Colors can appear different depending on light and how the listing is viewed. Thanks for your understanding and attention. Wish you a pleasant shopping experience!