72mm Magnetic Variable ND8-ND128(3-7 Stop) Lens Filters + Magnetic Filter Basic Ring Kit with 28 Multi-Layer Nano-Xcel Series

SKU: KF01.1979

A
Hi, thanks for inquiry, lens cap size should be 86mm, you can search KF04.075 to find it.

For this series, front thread diameter is bigger than the back thread diameter. for example:
Back thread diameter (attach to lens): 82mm
Front thread diameter (attach additional filter/other accessories): 86mm