The X-ACTO #25 Large Contoured Blade is a heavy duty, durable blade designed for high pressure cutting through dense materials. The contoured blade is razor sharp and strong enough to handle tougher materials. The #25 blade also features a fine point, considering its thickness, that provides a combination of strength and finesse. The #25 Large Contoured Blade by X-ACTO is designed for easy cutting and trimming of these heavy-duty materials: Thick plastic Linoleum Tough rubbers Leather Foam board And more X-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.