Haida Red Diamond Shockproof 150mm Medium Grad ND0.9 Filter ND GND 150 x 170mm Double Strength Optical Glass MC 3 Stop ND8 HD4391 Shockproof Double Strength Optical Glass Nanopro Multi-Coated on sides of Glass. Wafer-thin nanopro coating protects against scratches, water, oil and fingerprints. Easy Clean. Features a Medium Transition from dark to clear. 2mm Thick, 150mm X 170mm. Fits all standard 150mm Holders inc LEE SW-150, Kase, NISI, Formatt Hitech, etc. Includes Padded Metal Storage Tin