That looks identical
to the HaulMaster (Harbor freight) QH that I have. Have a look at these photos
if you want to make it work even better. Your turnbuckle style stabilizers might even make that QH even less forgiving when you're trying to back into an attachment because they don't have as much slack as the telescoping type stabilizers. The sharp edges on those hooks catch on things pretty badly and just push the implement around rather than centering the QH in the lift pockets on the implement. About the only thing it does do is keep the lift arms spread the right distance. Not much point in having a QH that you still have to get on/off the tractor and use pry bars, etc.
You'll also find those are Cat 3 hooks. Tractor Supply has some great incremental bushings that will let you go from Cat 1 to 2, then 2-3, which helps tremendously with anything that has to have a tight and rigid connection to the 3PH. You can get them on Amazon as well. I get another set every time I get a new piece of 3PH equipment. Coat 'em with grease/graphite, and they make excellent rollers to let the pins slide down in the hook very nicely.
The mod in those photos made a HUGE difference. I can pop my BB on in a blink now without leaving the seat, and there's no more struggling to level the blade because of slack in the connection. The chipper takes a little longer because I have to connect the PTO shaft first, but otherwise, I back up against it and lift. The only reason I can come up with those hooks being so square on the edges is a cost reduction in production after cutting those parts from steel plate with a plasma cutter. The hooks are a LOT larger and stronger than anything you'll ever pull or lift with it, especiallly on that little BX. If this was being used on a Cat 3 tractor, well MAYBE you'd break it, but it's pretty stout.
I used cut-off wheels on an angle grinder to remove the bulk of the material from the corners, then a flapper wheel to shape and smooth them. I have ZERO concerns about breaking it with my LX or any of my implements.
IMO, it could have been about 2 inches shorter vertically which would have moved the top hook up a couple holes and made it a little more adjustable. Having to put the top hook in the very bottom holes for Cat 1 implements is a bit annoying. But, it does the trick, and fits anything I have with a QH Compatible sticker on it. An ongoing project I have is modifying my 3PH Receiver Hitch drawbar so that I can just drop it on the QH and boogie. The next thing I'll mod is my sub-soiler so it too will fit on the QH. I need to build a rack for that as well, especially if I get it QH compatible. I'm in no particular hurry though. It's shed time that keeps me outta the missus' hairdo.