All I see is a pic of a dude working on a bike. Where's the repair stand?
It's the metal pipe on the left side of the bike with a of couple of U type pieces welded on it to cradle the frame in 2 places.
Clever I suppose if you didn't feel like just turning your pedal only bike upside down AND it happed to fit the frame but not really practical for my use anyway.
We have tried a couple of things but the one rack we built with some scrap wood, glue and screws ~4 years ago is still the main indoor 'build bay'.
It doesn't allow you to spin the wheels, but it will hold most any bike with 2.25" max wide 20-29" tall front wheel in place, even with fenders, and it is out of the way of everything and portable.
The wooden square was a fluke, after the shop fire a couple years back the insurance adjuster cut a 'carpet square' to assess it's value right frigg'n there!
Not from a corner under my bench or something but right there where my bike rack fits best so we dropped a piece of plywood with both poking in the perfect distance from the wall to allow the rack to pivot on the bolt but not move anywhere else when rolling bikes in and out of it.
We can do most work at ground level thanks to a couple of padded rolling dinning room chairs and it's a padded carpet floor so sitting on the ground is too bad, but my buddy and are getting to old for 'getting and down from the floor' so he decided to make a Platform Rack to raise the work.
It does help for some work but a bit unruly and far from portable.
Just idea's for you as both were practically free to make and serve every function out of the way but wheel spinning.