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.
Baader
Diagonal mirror Maxbright Universal 90° T2
$ 252.00
ready for shipping in 1-2
weeks
Baader
BBHS® T2 mirror star diagonal
( 5 / 5 )
$ 313.00
ready for shipping in 1-2
weeks