Blade refills feature a quality sharpened, carbon steel construction to help you make elaborate, detailed cuts. Unique, blade dispenser allows you to easily access the next blade when it is time to switch safely and without hassle. Blades are perfect for delicate, precision cutting, detailing, trimming and stripping of paper, plastic, balsa and bass wood. No. 11 blades are designed for use with X-Acto Type A handles (sold separately).