This is a compatible twin pack of Toshiba TK12 (TK-12) black laser toner cartridges, guaranteed to perform with Toshiba laser printers. Each cartridge offers a standard yield of up to 11,000 pages, providing an economical alternative to expensive OEM options. Manufactured 100% brand new, these cartridges deliver high-quality printing results and do not void your printer warranty. Backed by our 100% Quality Satisfaction Guarantee.