There is a huge quality control issue with these lids. They USED to be great, but over the past couple of months the quality has decreased greatly.
*They come very dirty with a black like substance on them. Often times I have to take the plastic piece off to clean between it and the glass.
*If you don't clean them thoroughly, the black particles will fall into your candle. I don't color my candles so it makes them look extremely dirty.
*There is good probability that the lids won't actually fit snugly like they used. Before, I could actually pick up my candles by the lids without fear of it coming apart. Now, doing that will land my candle on the floor because there is no snug fit.
*Out of a case of 60 I just purchased, 10 lids are unusable as the plastic piece that fits inside the jar is messed up. One of the lips is rolled under and can't be fixed.
I'm unsure if Candlescience has changed suppliers, or the supplier has changed the way they are produced. Either way, the quality is no longer there. Until this issue is resolved, I will seek out another supplier lids.