if you don't trust them then go japanese(aluminium racing) lock nuts which will set you back $200-250/set.
sets normally come with the adapter socket except maybe the cheapy ones, make sure you get the right lug pattern and style nut (acorn or tapered)
damn, i paid like 9.6x more than what you did for lugs.
But then mine were lightweight aluminium 5zigen pro racer ones, and im still scared they might fail and pop off cause aluminium is softer.
Wished lugs were cheaper.
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