NT's Precision swivel knife has a high-quality noncorrosive zinc chuck, a light aluminum diecast holder with a nonslip cushioned grip. Unique art knife is designed so that the blade can rotate 360 degrees on its axis and follows precisely in the direction of the hand movement for cutting perfect smooth curves. It's as easy as drawing curves with a pen. Includes (5) 30 degree blades and a protective blade cap. The blade used in this professional swivel knife is made of high quality carbon tool steel and produced through multiple stages of precise process to obtain the ultimate sharpness and optimum edge-retention. Holder is made from 100% post consumer recycled material. Good for hobby projects, crafts and other artisanal projects. Made in Japan.