...both the reviews and the product spec.
Totally my bad, they just kinda looked like what I was after and I clicked to buy
They're really pretty, but also pretty tiny.
This was clearly listed in the detail, but I failed to pay attention to that.
Also, when I screwed them into existing rawl plugs, the shafts of them proved very malleable and bent very easily. I wasn't able to screw them in flush to the wall I was afraid of them breaking clean off.
Sorry but they fell kinda short of my expectations, though I do accept that's my own fault for not reading the details and the reviews properly.