This three-in-one corner punch tool from Recollections is a great tool for making clean rounded corners on your handmade scrapbook pages, cards, party decorations and more! Compact and easy to use, it features three corner sizes perfect for a wide array of papercraft projects. Details: 3.5" x 2.8" x 1.75" (8.9cm x 7.1cm x 4.4cm) tool dimensions Creates 4mm, 7mm and 10mm rounded cornersCompact and easy to use For best results use on 65 lb. card stock and lower Care & Usage: Punch can be sharpened by punching through aluminum foil or lubricated by punching through waxed paper.