Those seem cheap enough.
On my Hawk flatbed the table is in the rear and if table is too high it could swing around and shatter the rear window if it would hit to hard on a ruff road. I guess it could happen on a front table model also. There were pictures that someone posted that they broke their front window.
Mine also would shimmy down so I went ultra cheap and had some leftover 2" electrical conduit. Cut to length and set the table where we enjoy the height. The writeup and pictures were here somewhere but could not find it. Images attached.
Thats a good idea too. I thought for $16 it was worth it to not have to constantly readjust the table as we'll likely always leave it up and at its highest position.