Isolation "plate" between backplate of LGA 115X sockets and it's motherboard PCBs. Used it with stock HP cooler PN: 644724-001. It's metal backplate is usually glued together with PCB by double sided tape so it's naturally isolated from the PCB. If you pry the backplate off the double sided tape gets mostly destroyed. This model is non-glued version of the double sided tape without glue.
It's thickness is only 0.4 mm depending printer settings results in 2-3 layers so it print's very quickly.
The author marked this model as their own original creation.