These X-Acto deluxe retractable blades are a great solution for cutting, scoring, trimming and stenciling. These blades feature a razor sharp edge and are compatible with all x-acto retractable knives. Great for hobbyists and designers, the deluxe retractable blade offers a convenient combination of durability and precision. Blades are designed to work with the following crafts paper, plastic, film, photographs and acetate. Contains 5 blades per pack.