Baader 1¼" Double T-Filter Holder (T-2 Part #31)
- Filter holder with T-2 thread and M28.5 internal thread.
- A continuous external T-2 thread with an internal 1¼" filter thread.
- Used for attaching 1¼" filters before Baader binoculars
- A 1¼" filter can be attached from either side and will sit within this adaptor