When I first got these jars a few months ago, 2 arrived cracked, but that was out of 4 dozen, so I didn't call it in.
But after doing nothing but sitting on a shelf, in the box, in my workshop nearly all the jars have cracks all over them!!
These jars are a joke, how are they supposed to withstand fire if they can't even handle sitting on a shelf??
Now I have to switch jars AND labels with only 2 months left to launch!