1、Aluminum alloy frame, CNC precision machining, screw thread installation, quick and convenient disassembly and assembly. 2、Multi‑layer nano‑coating technology, the lens has waterproof, oil‑proof, anti‑fouling, and anti‑scratch performance to protect the lens from dust and scratches. 3、The number behind ND represents the ability of the ND lens to block light. The effect of the ND1000 filter is more prominent. 4、Using this filter, you can get more freedom to control the aperture and shutter, bring more exposure methods and creative space for photography creation, and effectively prevent overexposure. 5、The ND filter is also used for shooting slow door special effects, such as flowing clouds, water, silk‑like waterfalls, light trails, and flowing ghosts. Item Type: ND1000 Filter Material: Aluminum Alloy + Optical Glass Product Color: As Pictures Shown Product Weight: Approx. 49g / 1.7oz 1 x Filter 1 x Storage Box