The Nemco 57424-5 1/4 in slice blade and holder assembly is designed for the Nemco Easy Chopper 3™. You’ll love the new color-coded (by size) system to make destructive match ups a thing of the past! The Nemco Easy Chopper 3™ also makes it easier to change your blade assembly—no more removing the bumpers now that the blade assembly is completely separate from the guide rods!
Below is a link to the actual chopper this goes one. It should give you a better idea of how to use it and what items you can use. http://www.nemcofoodequip.com/products/food-preparation-equipment/easy-chopper-3