Okay, useless may be a bit generous as the instructions only include about half of the steps and none of the important ones. But eventually I found a video from Bull Ring on how to install their similar version and was able to figure it out without having to get out the grinder.

If you don't want to hunt around for the actual instructions, here you go (note- this is for the upper, angled style) -

Step 1 - completely remove screw
Step 2 - lock metal piece in the extended position, fully against nuts
Step 3 - move plastic and middle piece as far away from the metal piece as possible
Step 4 - (this one is actually included + has a diagram) remove bed plug and insert metal piece per diagram
Step 5 - slide middle piece half way down and insert into hole
Step 6 - insert and tighten screw, fully tighten when ring is square to bed

There are cheaper tie downs, but why would I want one that I have to replace when I could buy the best for a little more? These inside the bed wall pull out when you need them and snap back when you don't need them anymore. These babies were not designed they were engineered, tested and then put up for sale! You will not believe how well they fit! Not made of plastic, all metal! They will still be working when you give your favorite truck to your son or if your lucky your daughter! I put them in myself, it really speeds things up if you have a helper to hold the tie down loop in the extended position if not a small vice grip clamped on one side will do the same thing. Some people could probably install them by just backing the screw out almost all the way, I could not. There's a plate that has to be inside the wall to hold it in place I could not accomplish that with out removing the screw. It might work with a longer screw, but I figured they already tried it out and for some reason it didn't work.
The more you put in the faster you get! Okay I only ordered 6 to start with then I realized three across the front is better especially if using a tarp to keep the wind from getting under it. Order 9 so you have enough for three all the way around. They sell nine for $99. But I got 8 for $99 because they didn't sell three, only 2 or 4! Since they sell 9, 6, 4 or 2 you have to settle for one too many or one not enough if you do not order 9 to start with. Next time I will return the six and then order nine! I begged to order just one more they suggested that two more would give me a spare. Right away I thought they didn't have as much faith in their products as I had!

2024 silverado 2500hd with line-x spray in bed liner.

Super easy install, 20 minute total install time (even though I installed one upside down initially and had to take it out and reinstall). Lock the anchor into the open position, remove the screw completely, slide the main body into the pocket, then slide the backing plate into the pocket, holding the anchor in the open position slide plastic face against the sheet metal and reinstall the screw. Prior to tightening the screw completely, test the anchor for functionality. If it is operating correctly, tighten the screw and you are done! That's it!

They seem to function smooth. They do NOT sit as flush as the "BULL RING" anchors, but the bull rings have more plastic components that breaks down over time.

I have not put these under load yet, but they feel like good quality. These anchor points will be used as secondary security for my load, I don't trust the sheet metal to hold any excessive amount of load.

5 stars! Very satisfied at this point!

These are really nicely constructed and I have had them installed for over a year now. Absolutely no signs of wear or tear. I only ordered 4 and my truck needs 8 so every time I need to tie down at a different location I get mad I didn't order 8. Time to order some more to complete the job.

Super easy to install once I worked out the direction they needed to face. Great price and feel very stout.