• Blade stays sharp 7-10X

X-ACTO Z-Series #1 Knife with Zirconium Nitride-coated #11 Blade - Delicate, precision cutting, trimming, stripping of paper, plastic, balsa, thin metal, cloth, acetate. Lightweight aluminum handle with easy-change ZrN-coated blade. Edge is proven to be 5X stronger and stays sharp 7 -10 times longer than standard blades.