No cartridges included. You'll use your existing OEM HP cartridges for this system. The products images show how the ink lines connect to cartridges. No more worrying about running out inks or those messy cartridges replacement. This continuous ink system fits HP printers with HP 56/57 cartridges: Deskjet 450 5150 5550 5650 5850 9650 9670 9680, Officejet 4110 4215 5505 5510 6110, Photosmart 7150 7260 7350 7450 7550 7660 7755 7760 7960, PSC 1110 1209 1210 1311 1315 1350 2110 2175 2210 2410 2510 410. Dye base ink MADE IN USA, not the cheap imported ink. We have high quality control for components. Once the system is installed on your printer, you'll never have to replace or remove cartridges. When you run low on inks, all you have to do is to refill by using our easy to pour refill bottles. The refill kit from us is only $28/set. A set come w/ 4 bottles(120ml each). The volume of this ink system is about 10-15 times more than your OEM cartridges. All installation accessories and detail installation instructions are included. Just connect ink lines from exterior tank to the existing holes on your cartridges and this process takes about 10-15 minutes then just put your cartridges back to your printer. We also sell same ink system w/ cartridges included and installed. You have 30 days for exchange or return from purchase date w/ original conditions. The system has 1 year warranty. The 1 year warranty is only valid when using OEM HP cartridges. Using aftermarket cartridges will void the warranty.