Allows you to use larger size filters on lenses with a smaller diameter thread. The first number is the size that screws into the lense, the second number is the filter size.
Reviewed by 3 customers
It helped me using all my old filters
I have no problem with it and it has a great price.
For the money this step up ring is great. The step up ring is metal, not plastic and the threading, etc.worked great on my lens.