55mm-58mm Step-Up Metal Filter Converting Adapter Ring
(Lens (55mm) to Filter (58mm)) New Japan
High Quality
Lens to Fit = 55mm ( Male Threads )
Filter to Fit = 58mm ( Female Threads )
This Stepping Ring enables a filter with an attachment (58mm Filter / Tube Adapter / Lens Hood / Lens Cap) size of 58mm to be used with a lens of 55mm.
The first number is always the lens thread size, the second number is the filter size of the accessory. If the first number is bigger, it's a step-down ring. If the first number is smaller, it's a step-up.
Still confused email us to clear it up further and also look at second picture that will help you understand.
We do combine S&H charges.