There is not much to say except that this device does what it is intended. Have ordered 5 of them and all 5 run without failure properly.
This clutch is the perfect alternative for a festeingegipste LAN jack. I have 4x these clutches and 4x Cat5e LAN cable so its own LAN jack built with an empty socket, so I stay flexible with the cable length in my office, if devices are switched.
The material is made of plastic and not metal though, but still makes a solid impression and is by no means cheap processed.
I do not know whether there is a performance limit, as far as could find no performance hit for the transmission of data.