Made to fit 10mm wide LED strips, use 2x M5 screws and rotating T-nuts to fasten this onto the extrusion. Most of the time I don't even bother with the adhesive on the LED strip, as the 45° angle slot keeps the strip oriented correctly.
Bar is 471mm long which fits inside the frame of a Voron v2.4 pretty much exact.
The author hasn't provided the model origin yet.