I ordered 48 wide mouth lids in November. I started to use them to can carrots. The first batch I used two ball jar lids I already had and four of the masonjar lids. The two ball jar lids sealed; the four masonjar lids did not. (they puckered along the seal line).
In addition, these lids (which were shipped from China) were supposed to arrive in 7-12 days and took three weeks and when I got my credit card bill there was an additional "fee" charged to my account.
I tried to email the company but the email wouldn't go through.