This Neutrik receiver mount will fit the 2 and 4 pole Neutrik recievers.
I use it as interconnects for speaker wire for the transducers on my rig.
It uses 1 M8x16 bevel head bolts like these to mount to 40 series profile
https://www.amazon.com/gp/product/B07Z3FXR8L
It uses 2 x M3x12 bevel head bolts to hold the receiver to the mount.
The author hasn't provided the model origin yet.