K&F Concept ND2 to ND400 Lens HD ND Filter Fader Easy to Variable Adjustable Neutral Density 49mm 52mm 58mm 62mm 67mm 77mm 82mm. 1 ND2 to ND400 Filter. 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 round, suitable for adventure use.
eBay