Full 1 year warranty against manufacturer defects and print quality. All toner cartridges in GREENCYCLE are certified with ISO9001 and ISO14001. Compatible new toner cartridge unconditionally guaranteed to provide same performance and reliability as genuine Samsung cartridge. Page Yield: up to 2,500 pages per black toner cartridge at 5% coverage (Letter size Paper). Actual toner yield varies with usage, graphics printed and environmental conditions. Compatible Samsung Printer below:Samsung ML-1910, ML-1911, ML-1915, ML-2525, ML-2545, ML-2525W, ML-2526, ML-2580N, ML-2581N, ML-2540R, SCX-4600, SCX-4601, SCX-4623F, SCX-4623FW, SF-650, SF-650P, SF-651P Printer High performance: Adhesive toner powder, resistant to color fading of all kinds, smudging, and bleeding. Make your presentations and printouts stand out with this GREENCYCLE premium-grade toner that produces clear, crisp, bold, and eye-catching text and graphics that ensure that people stay awake at your next meeting.