Reference: 90431732
Lens diameter 40,5mm - 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) 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: 90431732
Reference: 90431607
Reference: 90431703
Reference: 90431493
Reference: 90431719
Reference: 90431445
Reference: 90431600
Reference: 90431720
Reference: 90431492
Reference: big00073
Brand: B.I.G.
Reference: 90431731
Reference: 90431446
Reference: 90431608
Reference: 90431721
Reference: 90431717
Reference: 90431725