The X-ACTO Z-Series #1 knife is the sharpest, most durable precision knife ever. When creating these new blades, the goal has been to design, develop and manufacture a #11 blade that is absolutely "best in class." The gold hue on the cutting edge is a zirconium nitride coating and the result is the sharpest blade in the industry; one that easily cuts paper, plastic, balsa, thin metal, cloth, film and acetate. A necessity for crafting, scrapbooking and any work that needs fine detailing, the Z-Series delivers delicate, precision cutting, trimming and stripping. Details:Can also be fitted with Nos. 10, 12, 13, 16 and 17 X-ACTO bladesCuts paper, plastic, balsa, thin metal, cloth, film and acetateContents:X-ACTO¨ Z-Series #1 knife with aluminum knife handle#11 classic fine point zirconium nitride-coated bladeSafety cap