77mm True Color Variable ND2-400 (1-9 Stops) ND Lens Filter Adjustable Neutral Density Filter with 18 Multi-Layer Coatings for Camera Lens Nano-Klear Series

SKU: KF01.2735V1

Q
How many adjustable gears does the filter belong to?
Answer Question
A
1-9 adjustable.Q:How thick is the frame?A:7.4mm.