K18 Grip-On knife comes with #11 double honed blade Precision knife with special screw for extra blade security and stabilization. Used for precision paper cutting, trimming card-stock and rubber, stripping of paper -Use with: foam, plastic, wood, cloth, film, polymer clay, cork, clay carving, pumpkin carving. -Used by: graphic artists, designers, hobbyists, scrapbook artists and crafters. Grip-On Knife fits with Excel Blades #5, #6, #10, #11, #12, #13, #16, #17, #17A and #21. Made in the USA