The Zebra Kit, Print Mechanism 203dpi, ZD421D is a replacement printing mechanism kit for Zebra ZD421D direct thermal label printers. It is designed for field replacement and maintains a printing resolution of 203 dpi, compatible with the ZD421 Direct Thermal series. The kit supports a maximum printing width of 4.09 inches (104 mm) and is intended for maintenance and repair applications of printers. The manufacturer is Zebra Technologies. This is a spare parts and printer accessories product, used to restore printing functionality in supported Zebra desktop printers.