![Heliopan 423 Adapter 58mm to 77mm](http://thelafirm.com/cdn/shop/products/oxyt4znuwecm1dvp1enw__38271.1676015789_{width}x.jpg?v=1705021494)
The Heliopan 423 Adapter 58mm to 77mm Step-Down Ring offers a simple way of adapting a series of different lens mount sizes or types to one standard size. This allows using just one set of filters rather than having to duplicate filters of different sizes.