Laser Tek Services &reg; Black Toner Refill Kit for the HP C3903A 03A LaserJet 5P 5mp 6mp 6P 6P se 6Pxi Kit comes with 1 Bottle, Easy Instructions, Funnel Cap, and Latex Gloves if needed Each Bottle is good for at least the same page yield as a new cartridge, usually a bit more. Product is guaranteed to be same quality print, Bottle size may vary BUT gram load is always the same. 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!!!