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.
ZWO
T2 / C mount adapter
$ 28.90
ready for shipping in 24
h
Baader
T2/1.25" ultrashort adapter
RRP:
$ 35.90
Our price:
$ 32.90
ready for shipping in 1-2
weeks
Baader
Adapter Eyepiece clamp ClickLock 1 ¼"/T-2i
RRP:
$ 100.00
Our price:
$ 90.00
ready for shipping in 24
h
TS Optics
Adapter T2 / 2"
$ 41.90
ready for shipping in 1-2
weeks
TS Optics
T2/SC adapter
$ 25.90
ready for shipping in 3-7
days
Askar
Adapter T2/M48 Adaptors
$ 28.90
ready for shipping in 3-5
weeks