K&F CONCEPT 72mm Variable ND Filter ND2-ND32 & CPL TRUE COLOR 2-in-1 Multi-Function Filter, Eliminates Yellowing, Double-Sided 28-Layer Coating, Optical Glass, Water and Oil Repellent, Scratch Resistant, with Filter Case (NANO-X Series) - Brand: K&F CONCEPT - Model: NANO-X - Filter Type: ND Filter - Included Items: Case, Instruction Manual Thank you for viewing. I purchased this from Amazon in July 2025, but I haven't used it as much as I expected, so I am putting it up for sale. It has been used only once and is almost new. I have kept it in its case and stored it at home since I bought it, and the exterior is also clean.