The top of a global attachment is similar to JDQA, a round solid piece probably 1.5 to 2" running across the loader frame. There are guides where the implement hooks catch the round receiver to help alignment. The implements have two very beefy hooks that hook on round catch on each side of the implement. Once you hook the top on and tilt back there's a spring loaded pin mechanism that engages and releases 1/2" pins on both sides of the implement. Those pins go into a mating hole on the attachment that is captive once the spring loaded pins are released and engage the keeper holes in the implement. There's no way to have it go on incorrectly and once it's on there's no way for it to come off. I didn't realize just how crappy the SS was until I got the adapter plate for my hydraulic PHD. I would never use such a poor design to pick something up that is important. If you were going to CC your own global pieces, 1/2" material would be useless. I think my implement hooks and pin receivers are probably 1.25" to 1.5" thick.
Heck, if I leave the pins disengaged just right they will engage themselves when I hook up to the next implement.
If you ever use a global attachment you will melt your SS attachment pieces down in your blast furnace and forge globals out of them in your forgery.