Reference: 90431731
Lens diameter 37mm - filter diameter 49mm.
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: 90431731
Reference: 90431704
Reference: 90431497
Reference: 90431739
Reference: 90431450
Reference: 90431738
Reference: 90431607
Reference: 90431446
Reference: 90431608
Reference: 90431706
Reference: 90431604
Reference: 90431735
Reference: 90431692
Reference: 90431723
Reference: 90431728
Reference: 90431718