K&F CONCEPT 55mm Variable ND Filter ND2-400 Variable Neutral Density Filter, Adjustable Dimming, 9-Stop Adjustment I used it once, but I'm selling it because I no longer have a use for it. There are some scratches on the case, but the filter itself appears to have almost no scratches. If you would like me to add more photos, please let me know. Please note that this is not a new item.