37mm-52mm Step-Up/Extension Ring

The 37mm-52mm Step-Up/Extension Ring enables mounting 52mm filters to a 37mm thread, and allows 6 mm of extra clearance for your rig. As an example, use the Step-Up/Extension ring to add any 52 mm filter to your iOgrapher case for iPad. The Ring also has a 37mm filter thread for extra flexibility to mount 37mm filters as well.

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