I bought these covers through they would fit on a lambda glass jar of retail, but after checking directly with a large surface of these covers in hand, they are slightly smaller (+/- 0 , 5mm) than the diameter of all the other pots I thought I was clever but I got screwed in the end because I find myself with pots without lids So I prefer to warn you, buy only if you already have pots yogurt Seb or Tefal. It must still report it, yes they stink plastic ...