This is a Compatible Xerox 109R00639 black laser toner cartridge, designed to perform with Xerox laser printers. It delivers a yield of up to 2,500 pages, making it a reliable choice for your printing needs. This cartridge is an economical alternative to the original Xerox 109R00639 toner, providing high-quality printing results at a lower cost. The use of compatible cartridges does not void your printer warranty and is backed by our 100% Quality Satisfaction Guarantee.