K&F CONCEPT 55mm Variable ND Filter ND2- ND400 High Definition Nano X Adjustable Fader Neutral Density Lens Filters(HD Nano-X version). 【Hydrophobic & Scratch Resistant】Both glass sides of K&F CONCEPT ND filter with multi-layer hydrophobic, oil-proof, and scratch-resistant coating, protecting the nd filter from all around, suitable for adventure use.
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