"► Cutter for ZD421 and ZD621 standard\nand Healthcare direct thermal printers\n► You can get the cutter\npre-installed with the ZD621 printer at\npurchase, but not pre-installed with the\nZD421\n► Kit includes: Cutter, Torx T10 and extra\nscrews for installation\n► Important: This is not backwards\ncompatible with the ZD420 or ZD620\n► Compatible Printers:\nZD421D, ZD621D\n\n"