Baader 2 Inch male / T-2 male Adaptor with Internal Filter Thread 1508035 UK

It had T2 male thread on one side and SCT thread on other side. It is compatible with many 2" star diagonals such as Baader Maxbright and other female SCT thread on the diagonal body. Adaptor ring with 2" external thread and T-2 external thread.

eBay