The Samsung 304E is a top quality extra high capacity toner cartridge, guaranteed to give amazing results.Samsung have been creating some of the best mono laser printers and toner cartridges for years, and this MLT-D304E black toner cartridge is just another fine addition. With an estimated page yield of 40,000 prints and compatibility with the Samsung ProXpress SL-M4530ND (among others), the genuine MLT-D304E is stunning.Each original Samsung 304E toner cartridges is brand new, sealed and come with a full guarantee from the manufacturer themselves.