Leica M39 Lens to M42 Pentax screw mount 39mm to 42mm step up screw adapter ring

Roxsen Global

This is aluminum made adapter lens adapter ring for M39 screw lens on M42 screw mount camera. You able to change all m39 lens , e.g. leica m39 lens to m42mm, then you can use all m42 mount adapter, such as m42/canon ; m42/nikon; m42/sony etc.