Reference: 90431728
Lens diameter 28mm - filter diameter 37mm.
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
Reference: 90431728
Reference: 90431497
Reference: 90431694
Reference: 90431498
Reference: 90431720
Reference: 90431501
Reference: 90431609
Reference: 90431453
Reference: 90431739
Reference: 90431499
Reference: 90431726
Reference: 90431730
Reference: 90431444
Reference: 90431492
Reference: 90431740
Reference: 90431688