This original CLT-K506L/ELS cartridge has been entirely from scratch by Samsung and contains 100% brand newl Samsung components. Samsung have designed this CLT-K506L cartridge from the ground up to ensure it works flawlessly with all compatible Samsung colour laser printers. As a brand new high capacity Samsung toner cartridge this unit is compatible with the Samsung CLP-680ND and all other printers listed above. Like all of our original toner cartridges our Samsung CLT-K506 black toner cartridge comes fully guaranteed and can be delivered free of charge within the UK.