95mm matte box adapter ring for LOMO OKC1-100-1 lens (62.5mm front diameter)

This adapter has two functions:

1. Allows using M86x1 filters on lenses with 62.5 mm outer diameter.
2. Allows coupling such lens with a matte box with 95mm opening.

Known compatible lenses are:

1. LOMO OKS1-100-1 in Konvas housing.

Made of anodized aluminium.