Excel 16006 K6 Type C Heavy Duty Aluminum Knife Handle Knife Blade Safety Cap 4 jaw machined aluminum chuck for secure blade positioning and a snug fitting plastic safety cap.Used for precision cutting, trimming, and stripping op paper, plastic, wood, cloth, and film.Works with Excel and X-ACTO medium blades, and heavy duty blades, carving gouges, carving routers, and pull cut saws. Made in USA.