37-43mm Step-Up Ring

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Features and Functions: The Step-Up/Down Adapter Ring allows you to use larger size filters on lenses with a smaller diameter thread and vice versa. The first number is the size th at screws into the lens, the second number is the filter size. Description: 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. Show more