77mm Magnetic Filter Reduction Ring

You have lenses of various sizes and 77mm filters?
No need to buy a set of magnetic filters for each size.
You can use the magnetic filters of the diameter of your largest lens and then just use magnetic adapter rings for your other lenses.

Note that it is not possible to stack magnetic reduction rings.
However, you can mount a magnetic reduction ring on a standard reduction ring.

This product is available in the following versions