For sale is a Progrey G100x filter set that I never got a chance to use, which includes:
1. Progrey G100x filter holder
2. Progrey T67-77mm Step-Ring
3. CPL 77-77mm G100X adaptor
4. CPL 77-72mm G100X adaptor
5. CPL 77-B60 G100X adaptor (for Hasselblad V lens)