HP 3600 Toner Refill Kit 4 Pack for HP 3600 3600n 3600dn 3800 Printers & HP Q6470A Q6471A Q6472A Q6473A Toner Cartridges INCLUDES RESET CHIPS Kit comes with 4 Bottles, Easy Instructions, Funnel Cap, Latex Gloves if needed, and reset Chips Ships Directly from our warehouse within 1 business day! Each Bottle is good for at least the same page yield as a new cartridge, usually a bit more. Great phone support with Laser Tek Services, not usually needed, but if you need it we are there for you. Save big each time you refill and GO GREEN!!!