I was excited to receive this product as I thought it would really help with prep time. I first tested it on an onion and it left really big pieces, I gave it the benefit of doubt because I know the outer layer of an onion can be tricky so took that bit off and tried again but still no luck. No matter how I tried to cut the onion it just wasn't chopping it nicely.  It was quicker to chop by hand. I then tried it on a pepper and the same thing happened, you ended up with big unchopped parts and chopped parts. I then tried a cucumber and after that carrots. I was not impressed at all. Doesn't do what is says and displays!