X-Acto X253 Designer Series Craft Swivel Knife Replacement Blades, 5 Blades per Pack Light duty replacement craft blade Rotates 360 degrees for easy cutting of curves, circles, and designs Must have for any craft enthusiast or hobbyist Fit with most X-ACTO knife models Perfect for cutting lightweight materials, such as paper, plastic, balsa, thin metal, cloth, film and acetate