if you go to the UScutter.com website and find the Copam, go to the options below the cutter and you will see it is a Roland blade, 45 degree for most cutting, 60 degree for more detailed/fine work. Then just go to do a search for Roland blades.
http://www.uscutter.com/Copam-CP-Series-Vinyl-Cutter-Professional-model-w-2-year-Warranty-B-CPCCP
http://www.uscutter.com/index/page/search?FullText=Search+by+Product+%23+or+Keyword&FullText=roland+blades