Pls contact our sales for details why choose this solution(DIY tool bag) for GS6000 ink cartridge (a)about chip set: it is glued tightly in the ink cartridge, so it could not be to take it out completely to another new ink cartridge. (b)about the ink bag: there is a one-way-flowing equipment inside of the ink bag, so it could not refill ink from the inkjet hole. (one-way-flowing equipment: means the ink only can flow out in one way but could not flow back)So we have to use our chip re-setter to reset the chip set when it was used up, and try to replace the old ink bag to our new ink bag. Ink Cartridge(950 ml)BlackT624100CyanT624200MagentaT624300YellowT624400Light CyanT624500Light MagentaT624600GreenT624700OrangeT624800 oi