1Aluminum alloy frame, CNC precision machining, screw thread installation, quick and convenient disassembly and assembly. 2Multilayer nanocoating technology, the lens has waterproof, oilproof, antifouling, and antiscratch performance to protect the lens from dust and scratches. 3The number behind ND represents the ability of the ND lens to block light. The effect of the ND64 filter is more prominent. 4With 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. 5It is also used for shooting slow door special effects, such as flowing clouds, water, silklike waterfalls, light trails, and flowing ghosts. Item Type: ND64 Filter Material: Aluminum Alloy + Optical Glass Product Color: As Pictures ShownProduct Weight: Approx. 53g / 1.9oz 1 x Filter 1 x Storage Box