K&F Concept 49mm Variable ND Filter ND8-ND128 (3-7 Stop) HD Hydrophobic VND Filter for Camera Lens No X Cross Nano-Xcel

SKU: KF01.1447

Q
Does it have threads on both sides to add another filter?
Answer Question
A
Yes, it has threads on both sides but they do not have the same diameter. For example, if the filter is 77mm, the outer part is 82mm.