Diy Ciss Continuous Ink System FOR HP 4 Color Printer HP21 HP22. Brand new Continuous Ink System (no cartridge include, use your HP cartridge) 4 x Silicon tube connected between ink tanks and cartridges 1 x set of installation kits (actual images of items are shown above) 400ml 4 color full set refill ink Comes with full instructions how to use and how to install. We have two different type of refill kit for this ciss the 400ml and the 2000ml We also sell the same system empty without ink for Pigment ink or any other ink. Features: 90% savings compared to the cost of ink cartridges! Silicon tubing and ABS plastic ink reservoirs Isobaric Equilibrium Structure No cloggin, No Leaking Quick installation and simple to use Vivid and high quality output and high stability with low price Never run out of ink at that inconvenient moment. If you run out of ink, you will only need to buy the refill ink for this system. simply pour the ink refill into the tanks No more Ink Cartridges purchase, No more Cartridges replacement Printing at home for a fraction of the cost has never been easier or cost effective Use on any type of paper 100% satisfaction guarantee .