Replace worn out knives or broken dies for your SCM Hydraulic corner rounding machine to keep your corners perfectly rounded, while also reducing wear and tear to your machine, protecting your investment. When combined with your hydraulic round cornering machine, these durable and robust dies and knives can cut through stacks of paper and plastic materials up to 4" thick. Both the die and knife are needed to accomplish a cut, but we sell them separately so you don't need to buy unnecessary consumables; this way you can replace a broken knife without having to buy a new die as well. You can buy Challenge SCM Hydraulic corner rounder dies and accessories online in several sizes including 1/8", 1/4", 3/8", 1/2", 5/8", as well as a straight die and 45° die option. All options are made of only high quality materials and built to last through heavy use.