I know, you don't offer one. I ordered size 40 thinking it would not be a problem but I'm afraid with a little pressure the cork could be pushed into the jar. Looking at size 42 - it may not get in the jar at all. The opening of my jar is 2-3/4" so caught between a rock and a hard spot! It is a great product and very reasonable as far as price goes. Ordering a quantity that you need and not forced to order a gross, also a huge plus. I'll figure out a way to put a knob on the #40 and make it work.