My 83 year old father bought this stupid can opener thinking it would help him open cans. It was just a piece of junk. Never did work right and was frustrating trying to figure out why it wasn't working. Never did figure that out. We ended up going to the grocery store and buying the cheapest manual can opener we could find and it worked better. Whatever you do DON'T buy this. It's not worth it. The cheap can openers you get at Dollar General work better.