The Dual Mount allows attaching two instruments on one mount at the same time.

Adapter M48 female M42 male - Thickness 5mm

The M42x0.75 socket is equivalent to the T2 socket, the edges of this converter ring are knurled for easier tightening

M48 to M42 conversion ring

M48 to 50.8mm adapter with M48 thread for 2" filters.
This adapter is usually used to connect CCD or reflex cameras (equipped with M48 ring) to 2" focusers.

You can also use this adapter to connect other products with M48 thread (M48x0.75) together

Extension ring with thread M48x0.75 male / female - Length 9mm

Extension ring with thread M48x0.75 male / female - Length 3mm