The file 'AOS5 V5 DJI Antenna W/ Immortal T 900Mhz (ELRS) 3D Printer Model' is (stl) file type, size is 744.7KB.
This is an antenna mount for the AOS5 V5. This will accept the DJI O3 antenna as well as an ELRS Immortal T for the 900mhz.