The #8 Lightweight Utility Blade from X-ACTO is a general purpose blade designed to provide an accurate cut through a variety of different medium density materials. The #8 blade also features a dual cutting edge. When one side begins to dull, simply reverse the blade for a fresh cutting edge ‚Äì twice the blade for the price of one!The X-ACTO #8 Lightweight Utility Blade works with a wide range of materials:CardboardPlasticMost papersFoam boardTwineAnd moreX-ACTO blades are designed to allow you to make the careful and detailed cuts you need time and time again. Our blades are created with care and exceptional craftsmanship, producing a cutting edge that stays sharp. An X-ACTO quality blade is always ready when you need it.The original X-ACTO knife has been praised for more than 50 years as the standard for precision. Attaining this level of precision, accuracy and reliability starts with supreme quality craftsmanship. X-ACTO knife blades are crafted with sharpened carbon steel for a reliable cut and a strong blade. X-ACTO knife blades fit with most X-ACTO knife models.