Cleanly made T2 extension ring with a length of 40mm. The T2 external thread is not included.
The T2 extension sleeve has the T2 internal thread on one side and a T2 external thread on the other side. With the help of this T2 extension sleeve, you can tune the required distance, e.g. to come into focus during astrophotography. By using different TS-Optics T-2 spacers you can fine tune the distance.