- Ring M48x0.75 female M56x0.75 male - Length 5mm
- Connection ring M54/M53 for Kowa TSN 770/880 Spotting Scopes
- enables connection of the Baader Hyperion Universal Zoom Mark IV to KOWA Spotting Scopes with M54 male thread
- Spotting-Scope-sided with M54 female thread
- Eyepiece-sided with M53 female thread