These magnetic step up rings allow you to use Kase magnetic 112mm filters on smaller lens sizes. The first size listed is for the lens size you will be using the step ring on. For example a 77-112mm step up ring allows you to use a 112mm filter on a 77mm lens.
Each step ring is compatible with Kase KW Revolution, Revolution Plus, and Skyeye magnetic filters.
Please note: Revolution Step Rings are not compatible with Wolverine Magnetic Filters and Accessories.