Particularly thin design aperture insert, designed to loose as little visible surface as possible in fog.
Size is indicated by the notches on the outer ring. Photo example is a size 2.9
Sold singular. Select required size above.
Inner Ring Diameter / Outer Ring Diameter
2.7 / 4.6mm
2.9 / 4.9mm
3.1 / 5.1mm
3.3 / 5.3mm
3.5 / 5.5mm
3.8 / 5.8mm
Item Nr.: 100-15244X
