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 15mm T2i/T2a T2 extension ring](/Produktbilder/normal/33224_1/Omegon-15mm-T2i-T2a-T2-extension-ring.jpg)
Omegon
15mm T2i/T2a T2 extension ring
$ 24.90
ready for shipping in 24
h
![Omegon 7.5 mm T2i/T2a T2 extension ring](/Produktbilder/normal/33226_1/Omegon-7-5-mm-T2i-T2a-T2-extension-ring.jpg)
Omegon
7.5 mm T2i/T2a T2 extension ring
$ 19.90
ready for shipping in 24
h
![Omegon Extension tube Extender 30 mm T- thread](/Produktbilder/normal/21991_1/Omegon-Extension-tube-Extender-30-mm-T-thread.jpg)
Omegon
Extension tube Extender 30 mm T- thread
$ 29.90
ready for shipping in 24
h
![Omegon Visual T male to 1.25” female with set screw](/Produktbilder/normal/21992_1/Omegon-Visual-T-male-to-1-25r-female-with-set-screw.jpg)
Omegon
Visual T male to 1.25” female with set screw
$ 34.90
ready for shipping in 24
h
![Omegon Extension tube Extender 7 mm T-thread](/Produktbilder/normal/21989_1/Omegon-Extension-tube-Extender-7-mm-T-thread.jpg)
Omegon
Extension tube Extender 7 mm T-thread
$ 29.90
ready for shipping in 24
h
![Omegon 40mm T2i/T2a T2 extension ring](/Produktbilder/normal/33223_1/Omegon-40mm-T2i-T2a-T2-extension-ring.jpg)
Omegon
40mm T2i/T2a T2 extension ring
$ 24.90
ready for shipping in 24
h
![Omegon Extension tube Extender 17 mm T-thread](/Produktbilder/normal/21990_1/Omegon-Extension-tube-Extender-17-mm-T-thread.jpg)
Omegon
Extension tube Extender 17 mm T-thread
$ 29.90
ready for shipping in 24
h