The Corner Mounter Tool by We R Memory Keepers cuts perfect corner slits to let you easily mount photos up to 5" x 7", business cards, mats, journaling cards, and more. The tool creates three styles of slits (angle, round, and stub) in 8 sizes for adhesive-free mounting. It easily punches through extra-thick cardstock or multiple pieces of thin paper. The magnets allow you to place the tool anywhere on the page and the transparent stencil allows for easy alignment. The package contains one magnetic template and two blades. The tool attaches to the stencil for easy storage.