Reference: 90431726
Lens diameter 27mm - filter diameter 30mm.
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: 90431726
Reference: 90431453
Reference: 90431695
Reference: 90431498
Reference: 90431495
Reference: 90431500
Reference: 90431721
Reference: 90431739
Reference: 90431454
Reference: 90431718
Reference: 90431711
Reference: 90431710
Reference: 90431444
Reference: 90431702
Reference: 90431704
Reference: 90431694