ShopAt247 &reg; Compatible Toner Cartridge Replacement for HP CE310A CE311A CE312A CE313A (1 Black, 1 Cyan, 1 Yellow, 1 Magenta, 4-Pack) ShopAt247 brand cartridge is sold exclusively by ShopAt247 ShopAt247 offers One-Year Warranty against defects Page Yield: providing equivalent print life to OEM cartridge These replacement cartridges were professionally manufactured in an ISO 9002 factory The product is formulated to provide excellent printing quality