The Heliopan 40.5-55mm Step-Up Ring (#198) is a step-up ring permitting the use of 55mm threaded filters on a 40.5mm threaded lens. Constructed of matte black brass, Heliopan step-up rings are highly durable and longer-lasting when compared to aluminum rings.
- Efficient solution for use of one size of filters with various sized lenses.
- Matte black brass lessens chance of glare.
- Rugged construction for ease of use.