This is a compatible Panasonic KX-P453 (KXP453) black laser toner cartridge. It is designed to work with Panasonic printers such as the KX-P4410, KX-P4430, KX-P4440, and KX-P5410. Manufactured in an ISO-9001 certified factory, this cartridge provides a reliable and economical alternative to original Panasonic toner cartridges. The use of compatible toner does not void your printer warranty and is backed by our 100% Quality Satisfaction Guarantee.