Excel Blades Sharp Straight Edge Blades are ideal for cutting and trimming thicker materials, including matte board, linoleum, foam core, plastic, cardboard, plaster cast, cork, metal, stone, wood, rubber, and more. Constructed from carbon steel, these versatile replacement blades fit Excel K2, K5, and K6 knives, as well as standard medium- to heavy-duty craft knives. - Excel Blades Hobby Blades - #2, Bulk Package, 100 BladesExcel Hobby Blades, NO2 100PC -