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Price includes and package contains (2) cartridges. These are our new compatible brand toner cartridge replacements that replace the Samsung SCX-4521D3. Our high quality aftermarket toner is unconditionally guaranteed to satisfy the most demanding print job. Use our compatible Samsung SCX-4521D3 toner cartridge with the Samsung SCX-4521 and SCX-4321 series laser printers. Our toner replacement cartridge is built with stringent quality control to provide you with results you can count on, page after page. Our high quality products are designed to be maintenance free to save you time and the inherent savings of using a compatible replacement cartridge produces the lowest overall page cost. Our compatible brand toner is built in an ISO 9001 certified factory for quality you can count on for home, home office and office use. Our manufacturing partners have worked to provide you with a product that is reliable and trouble free. That, coupled with our aggressive pricing, provide you with the tools you will need to make an intelligent buying decision for your Samsung SCX-4521 / SCX-4321 toner purchase. Purchase your Samsung SCX-4521 / SCX-4321 compatible toner cartridge with confidence today!