Like everything EMPI sells, this was a kit of parts that you can eventually assemble into something functional. As an added bonus, there were no instructions included.
As delivered, the rod would not fit through the holes thanks to the plating and were oval to boot. Some quick work with the step drill fixed the issue.
Product links:
https://empius.com/products/bench-mount-head-assembly-tool-boxed/
https://aapistons.com/products/bench-mount-head-assembly-tool-boxed
How to use:
https://youtu.be/QIsq3TdNkTc
https://youtu.be/riii6o-X4Mc