Reference: 90431708
Lens diameter 40,5mm - filter diameter 58mm.
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: 90431708
Reference: 90431694
Reference: 90431730
Reference: 90431497
Reference: 90431452
Reference: 90431718
Reference: big00073
Brand: B.I.G.
Reference: 90431703
Reference: 90431704
Reference: 90431448
Reference: 90431450
Reference: 90431716
Reference: 90431714
Reference: 90431492
Reference: 90431724
Reference: 90431600