Laser Tek Services&reg; High Yield Toner Refill Kit for toner cartridges compatible with the Samsung ML-1510, ML-1710, ML-1720, ML-1740 Kit comes with 1 Bottle, 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!!!