The PrimaLuceLab Adapter ESATTO 3-inch -for Takahashi Telescopes with M72 Thread:

Thanks to its low profile, the ESATTO 3-inch is the perfect motorized focuser for Takahashi telescopes with M72 thread. By adding the M72 adapter, you can thread the ESATTO 3-inch focuser directly onto the back of these telescopes, and use the ESATTO to achieve more precise focus. 

An adapter for your 3-inch ESATTO focuser to attach to a Takahashi Telescope with M72 Threads.