https://www.coolermaster.com/en-global/products/universal-vertical-gpu-holder-kit-ver2.html
Universal Vertical GPU Holder Kit ver.2
The Cooler Master Universal Graphics Card Holder Kit Version 2 comes redesigned for maximum compatibility and easy installation.
gpu holderuniversalverticalkit2
https://www.newegg.com/p/3C6-00U6-00084
EZDIY-FAB Vertical PCIe 4.0 GPU Mount Bracket Graphic Card Holder with 5V 3 Pin ARGB LED Module,...
Buy EZDIY-FAB Vertical PCIe 4.0 GPU Mount Bracket Graphic Card Holder with 5V 3 Pin ARGB LED Module, Video Card VGA Support Kit with PCIe 4.0 X16 Gen4...
https://www.printables.com/model/239395-riser-holder-for-vgagpu-miner-rig
Riser holder for VGA/GPU MINER RIG by 3D_HRLV001 | Download free STL model | Printables.com