Review on 90 55 280 Nibblers - Essential Tools for Efficient Cutting by Lynn Cole

These pliers will cut a clean groove in 16ga material leaving a clean edge with no curl or distortion. It leaves a bit of jaggedness, but nothing significant. Some of the reviews that mention pinching are correct, but if you're aware and careful, it's not a problem for those experienced with hand tools. 4 stars instead of 5 because it takes quite a long time. small cut so if you have a long piece of steel it will take a lot of cuts and you might consider a power punch press.