DigiToner&reg; New Compatible Replacement Samsung MLT-D108S Toner Cartridge For Use In ML-1640 ML-2240 Printer (Black, 1 Pack) HIGH QUALITY: Because TonerPlusUSA's extensive research and development, this compatible replacement Samsung MLTD108S toner cartridge is guaranteed to be easy to install with your laser printer and give your documents outstanding print quality, clarity, and exceptional yields at a Lower cost. RELIABLE TONER: Includes 1 Black toner cartridge. Certified ISO 9001 for quality assurance. Environment assured Certified ISO 14001. COMPATIBLE PRINTERS: Samsung Laser Printers ML-1640, ML-2240 YIELD: 1,500 pages based on 5% coverage. 100% MONEY BACK GUARANTEE: If, for whatever reason, you don't absolutely love your print quality, just return it, and we'll replace it or give you 100% of your money back, no questions asked. We're that confident that you'll love your print quality, and will continue to use our products in the future.