I got an email from China freight and it looks like if you have ANY jackstands you can return them.
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I myself have a set of the orange 6 ton one I bought literally the first time I ever was in a Chinese freight and didn't quite understand the junk they pedaled.
But I have used them under a ton of trucks over the last 15+ years.
I do wonder if they would return those or not.
I've LOVED my 12 ton ones. Super stable. Looking into the 6 ton defect though, want to check contact patch on the engagement pawl.
Returning my 6 tons today, hoping for cash and not store credit. Of course, just a few days before i need to do a full axle replacement on the trailer.