This M54 adapter is for the new M42 filter drawer and new filter drawer for Nikon/Canon lens. If you use the above two filter drawers and are confused on how to connect the filter drawer to ZWO full frame camera (ASI6200/2400), ASI2600 Air and Duo cameras, then this adapter can be helpful.Please remove the original M42 adapter from the M42 filter drawer, and then fix the M54 a dapter with screws.

What’s in the Box?