Reference: 90431492
Lens diameter 34mm - 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) 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: 90431492
Reference: 90431725
Reference: 90431704
Reference: 90431734
Reference: 90431491
Reference: 90431599
Reference: 90431452
Reference: 90431692
Reference: 90431700
Reference: 90431727
Reference: 90431497
Reference: 90431702
Reference: 90431687
Reference: 90431495
Reference: 90431455
Reference: 90431722