Astro-Physics

T-2 means 42mm thread. The mirror has a T-2 outer thread on one side and an inner thread on the other side. These threads are not standard for 2" eyepiece barrels. It is only possible to attach 2" eyepieces by mounting a 2" eyepiece clamp on the mirror. Unfortunately the mirror is not big enough for completely illuminating the field of large 2" eyepieces, for this you should choose the 2" version of the mirror.

The 1.25 Glasspathcorrector for Baader Maxbright cannot be used with the Mark V Großfeld (Giant) - Binocular.

The Baader Maxbright Binocular, and eventually the new Baader Maxbright Mk. II, which will come in the market pretty soon

https://www.baader-planetarium.com/en/maxbright-binocular-incl.-case.html

has a completely different design from the Mark V Großfeld (Giant) - Binocular
https://www.baader-planetarium.com/en/mark-v-gro%C3%9Ffeld-%28giant%29-binocular.html.

This means, that the difference in the design between these two products, requires differently designed glasspathcorrectors.

The two models:

the Glasspathcorrector 1:1.25 for Baader Maxbright binocular (# 2456314)
https://www.baader-planetarium.com/en/glaspathcorrectorr-1125-for-baader-maxbright-binocular.html

and the Glasspathcorrector 1:1,25 Glasspathcorrector 1:1.25 for Baader Mark V Großfeld (Giant) - Binocular (# 2456314Z)
https://www.baader-planetarium.com/en/glaspathcorrectorr-1125-for-baader-mark-v-gro%C3%9Ffeld-binocular.html

are not interchangable. This information is true even for the 1:1.7 Glasspathcorrectors. The differences are not that important for the 1:2.60 Glasspathcorrector, therefore exists only one version of the 1:2.60 Glasspathcorrector for both binocular versions.

This will work!

Zeiss Bayonet and Leica Bayonet are different so it will not fit

You can use the 1,25" nosepiese https://www.baader-planetarium.com/en/accessories/adapters-imaging-accessories/astro-t2-system/baader-nose-piece-1%C2%BC%22--t-2-%28t-2-part-14%29.html or the 2" nosepiese https://www.baader-planetarium.com/en/accessories/adapters-imaging-accessories/astro-t2-system/baader-2%22--t-2-nose-piece-and-camera-adapter-%28same-as-used-by-sbig%29-%28t-2-part-16%29.html