Bracket to mount an LM2596 DC to DC converter to any extrusion with M3 hardware. A good use case is the Voron V0 Formbot kit which comes with this converter. PCB mounting holes are sized to self-tap with M3 machine thread screws (they are 3mm, will result in slightly under sized holes when printing which is intentional - don't use slicer hole compensation).
Suggest checking your PCB measurements against the included picture as they may vary in size. Holes are 37mm and 18.75mm respectively from the opposite edge of the PCB.
The author marked this model as their own original creation.