Reference: 90431721
Lens diameter 46mm - filter diameter 52mm.
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
Reference: 90431721
Reference: 90431724
Reference: 90431728
Reference: 90431494
Reference: 90431719
Reference: 90431601
Reference: 90431692
Reference: 90431500
Reference: 90431608
Reference: 90431694
Reference: 90431452
Reference: 90431449
Reference: 90431730
Reference: 90431690
Reference: 90431720
Reference: 90431499