There are 2 versions: light (1 prong, see photo) and sturdy (3 prongs). Both work with O4X and RunCam WifiLink 2 VRX. Use an M3 screw and a nut to secure.
See the zip archive for the FreeCad source project.
Fit is perfect printed in transparent PETG on the Prusa Core One (stock nozzle 0.15 structural profile).
The author marked this model as their own original creation.