The R7 (9/32”) cutting die, designed to cut up to 3” at a time, is compatible with the CornerMaster 7 Corner Rounder. The R7 cutting die is ideal for rounding the corners on covers, postcards, invitations, business cards, and more. It can be used to cut all standard materials such as paper, PVC, polyester, and other paper or plastic based products. These cutting dies, which are quick and easy to switch out, are also available in 1/16”, 1/8”, 5/32”, 3/16”, 1/4", 5/16”, 3/8” and 7/16” radii.