This is a Compatible Toshiba T3580 black laser toner cartridge designed to work with Toshiba laser printers. It provides a standard yield of up to 40,000 pages, making it an economical choice for high-volume printing needs. Manufactured brand new, this toner cartridge serves as a cost-effective alternative to expensive OEM options without compromising on quality. The use of compatible toner cartridges does not void your printer warranty. We back this product with a 100% Quality Satisfaction Guarantee.