This adapter consists of a male M68 x 1 thread on one end and a male M68 x 1 thread on the other. Optical thickness of the adapter is 3mm.
This is very useful for connecting accessories such as filter drawers or filter wheels with a female M68 x 1 thread to accessories with female M68 x 1 threads.
|Connection side A
||Male M68 x 1
|Connection side B||Male M68 x 1