With these patented dies and knives for your Diamond 7 corner rounder, you can keep the machine cutting at peak performance, achieving extremely smooth and cleanly rounded corners while also reducing wear on the machine. The bottom die offer micro-adjustments to allow for perfect settings and finished cuts, every time. In addition to a replacement part for your cutter, you can also purchase different die sizes to offer more versatility to your clients. In fact, you can buy Diamond 7 dies and accessories online at Binding101 in radius sizes including 1/8", 1/4", 3/8", 1/2" and 5/8". They are even available in a straight edge and half moon die configurations. These dies are made of the highest quality materials, and considered very heavy duty for industrial and commercial use, capable of easily cutting through 2 ¾" thick stacks of paper, as well as other laminate and plastic materials.