Fotodiox Pro WonderPana FreeArc 77mm-145mm Step-Up Ring from Fotodiox Pro Anodized Black Metal Aluminum Step Up Ring for 77mm Lens Threads to 145mm Round Filters and WonderPana66 6.6 x8

The WonderPana FreeArc Step-Up Ring provides the freedom to use share and rotate 66 and 145 filters on all of your regular lenses. Fotodiox step-up rings are made with precision out of premium grade aluminum. Every ring is inspected to ensure smooth mounting and is polished and finished with anodized matte surface for professional appearance. Step up rings allow larger sized filters to fit on lenses with smaller sized filter threads.This step ring will allow the WonderPana145 filters (with a 145mm thread) to fit on lenses with a 77mm threaded front. Smaller step up rings can be used to adapt to smaller sized lenses (ie; if your lens has a 58mm filter thread the 58-77mm and 77-145mm step up rings would be used together) and can be purchased separately. The WonderPana Freearc Step Up Ring can be upgraded with the 66 Upgrade Bracket (sold seperately). This is a 6.6 wide holder bracket which allows the WonderPana 66 filters (6.6x8.5 rectangle size) to fit and work on all lenses.