38mm clamp (V38) to SM2 male thread adapter for Schneider Macro-Symmar lens

• Front side - 38mm inner diameter (accepts Schneider male V38 mount)
• Rear side - SM2 male thread (2.035" - 40tpi)

Made of high quality aluminium alloyWhy aluminium?.

This adapter allows using lenses with so-called V38 mount (like Schneider Macro-Symmar) on Thorlabs tubes with SM2 thread.

Flangeless design allows putting a lens deep inside a tube.