Trim the corners of your printed documents with this R9 (3/8”) cutting die. Compatible with the CornerMaster 7 Corner Rounder, the R9 cutting die is designed to cut up to 3” of stock at a time. It can be used to cut all standard materials such as paper, PVC, polyester, and other paper or plastic based products. Dies for the CornerMaster 7 are also available in 1/16”, 1/8”, 5/32”, 3/16”, 1/4", 9/32”, 5/16”, and 7/16” radii. These interchangeable dies are quick and easy to switch out.