A T2 thread, also written T-2, has a diameter of 42mm and a thread pitch of 0.75mm. It is also sometimes written as M42x0.75.
The low pitch distinguishes it from other M42 threads.
![Omegon Adaptors 1.25'', 30mm extension tube](/Produktbilder/normal/33232_1/Omegon-Adaptors-1-25-30mm-extension-tube.jpg)
Omegon
Adaptors 1.25'', 30mm extension tube
$ 24.90
ready for shipping in 24
h
![ZWO Adaptors T2 to 1.25" adapter](/Produktbilder/normal/70733_1/ZWO-Adaptors-T2-to-1-25-adapter.jpg)
ZWO
Adaptors T2 to 1.25" adapter
$ 42.90
ready for shipping in 3-5
weeks
![TS Optics Adaptors T2 to 1.25" adapter](/Produktbilder/normal/48761_1/TS-Optics-Adaptors-T2-to-1-25-adapter.jpg)
TS Optics
Adaptors T2 to 1.25" adapter
$ 32.90
ready for shipping in 3-7
days