Reference: 90431609
Lens diameter 37mm - filter diameter 43mm.
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: 90431609
Reference: 90431497
Reference: 90431453
Reference: 90431703
Reference: 90431601
Reference: 90431495
Reference: 90431739
Reference: 90431700
Reference: 90431696
Reference: 90431498
Reference: 90431710
Reference: 90431608
Reference: 90431735
Reference: 90431738
Reference: 90431697
Reference: 90431691