Ouch!
On the AliEx link it said for balance bike. Maybe it is not intended for adult use!
It's a shame if you have a retro Raleigh with a 21.1mm steerer, because the Muqzi/Rockfish 20.8mm quill adapters are the only ones that will fit.
The "just for kids" description seems to have been added relatively recently after the complaints of failures started coming in.
@AntSel started
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Ouch!
On the AliEx link it said for balance bike. Maybe it is not intended for adult use!