Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Not heavy duty at all

I broke my pair cutting a chicken apart. They are hard to hold especially with greasy hands, they don't open wide enough and the curved part of the blade that is used for gripping a chicken bone is too thin that's where it broke on me. I really like Zyliss products but they need to go back to the drawing board on these. If you are cutting paper these are great.