Thank you for viewing. K&F Concept 2-in-1 Black Mist 1/4 & Variable ND2-400 φ58mm Nano-X Series MRC Purchased new from Amazon about two years ago. There are fine scratches and signs of use overall, but there is no problem with the performance. The product itself is labeled "Black Diffusion" instead of "Black Mist," but I followed the listings on Amazon and the official website, which used "Mist."