X-Acto - No. 8R Light Weight Utility Blade - 5 Pack - X-Acto No. 8 Blades are great for general purpose cutting of medium weight materials such as paper, cardboard, plastic, twine, and foamboard. Xacto Number 8 Blades are two sided, when one end of the blade dulls, reverse the blade for twice the cutting life! Use with X-ACTO Board Cutter. Includes 5 Blades.