Magnetic Streak-Gold Filter Kit from H&Y features a circular polarizer filter and filters, all magnetic. A magnetic adapter ring is included that screws onto the 77mm front filter thread of compatible lenses. With this adapter ring attached, you can then magnetically mount and filters.

77mm magnetic step-up ring is included that can be screwed onto 77mm lens filter threads to magnetically support all the 77mm magnetic filters. With the magnetic adapter ring and this step-up ring in your toolkit, you'll be able to work with both 77mm threaded lenses. The kit is complete with a magnetic lens cap.