I bought a pair of these off Ebay in Australia last year......exactly the same, except they are painted orange not blue. Same spec with regard to the WLL, but they are definitely not aluminium, they are steel, which I suspect is the case for these AliExpress ones too. If they are not steel, I wouldn't touch them personally.
They are not the easiest things to fit, but it is doable if you have a bit of patience & are prepared to fiddle around a bit. As Serenity Now
suggests, the wires on the nuts are not springs, they are for holding the nuts in place inside the chassis rails while you insert the bolt......yes, this is the fiddly bit!! Here's a tip though....use a couple of drops of super glue to hold the nut in place on the chassis once you have a few threads of the bolt into the nut. Then, if the wire snaps off the nut (as one of mine did), you can still tighten the bolt.
The other issue when fitting is that the washer water bottle gets in the way. Some people on the Australian FJ forum said that you need to remove the washer bottle to be able to insert one of the bolts, but I did manage to do it with the washer water bottle in place.....another fiddly bit!
The other thing to watch is your bull bar, if you have one. I have an Iron Man bull bar & I knew from the suppliers web site that they would fit with an Iron Man bar.
I have to say that I have not yet used the recovery points in anger......they have been used, but not aggressively. However, with a 3,250KG WLL, I am not overly concerned.....but make sure that the bolts supplied with the kit are high tensile bolts & if they are not, replace them with high tensile ones. Also though, like Sanderhawk
, since fitting the recover points late last year, I have now fitted a 12,000LB winch, so I have another insurance policy!!
Hope this helps