Reference: 90431725
Lens diameter 77mm - filter diameter 72mm.
Used to mount filters or pre-filters on lenses if the filter dimension is different than the lens dimension.
Reducing rings (also called step up or step down rings) are used to attach filters or pre-filters to lenses when the filter dimension is different from the lens dimension. Thus, they allow you to use one filter/pre-adjustment on multiple lenses. The first is the lens dimension, the second the filter dimension in mm.
Data sheet
Specific References
Reference: 90431725
Reference: 90431691
Reference: 90431727
Reference: 90431453
Reference: 90431689
Reference: 90431733
Reference: 90431703
Reference: 90431697
Reference: 90431711
Reference: 90431607
Reference: 90431496
Reference: 90431731
Reference: 90431692
Reference: 90431454
Reference: 90431613
Reference: 90431732