This multi-use kitchen gadget allows you to chop uniform slices of onion without your hands gripping the onion. It features ultra-sharp stainless-steel prongs that pierce and hold even the hardest vegetables like carrots & potatoes. Onions can be sliced extra thin by inserting the knife twice between each prong. It can be used for many other vegetables and fruit like tomato, potato, cucumbers, carrots ,etc.