This came on time, and it works ok I have the large mouth sealer jar sealer as well. Here are some things I have noticed that the Regular mouth size is different from the larger mouth one. When you remove the sealer the rubber ring comes out, not a big deal it goes right back in, but irritating. doesn't always want to seal, not sure why but if you put on 2 lids for some reason that makes it seal. Over all this is a great idea and works well. And it SAVES so much money not having to buy bags for everything. I use this for left over's, and it will keep a half avocado sealed then put in fridge green for three days. Get one and save on bags for the things you will be opening a few times.