- Front side - 38mm inner diameter (accepts Schneider male V38 mount)
- Rear side - SM2 male thread (2.035" - 40tpi)
Made of high quality aluminium alloy.
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.