I’m not a big fan of kitchen gadgets at large. But every once in a while something comes along that really makes life easier. This jar key is one of them. It simply fits under the lid and pops the air release button on the top of the jar. Voila! The jar lid unscrews effortlessly. Forget sticking those pennies and knives under the lids. Try the jar key. I bought one for each my, Mom, 3 sisters, and my niece… Say good-bye to arthritic pain when opening those stubborn jars. Enjoy!