Our Small Format Flush Kit is designed only for Epson desktop printers that have ink cartridges connected directly to the print head and which ride on the print head as it moves back and forth. The kit has a fixture that is designed to be placed in the same position as an ink cartridge and used to directly inject cleaning fluid into the print head with an included syringe. This kit will only work with the P400. The P600 must be flushed using cartridges. The P800 must be flushed using cartridges but has another exception; which is that Epson locked the North American versions of this printer against use with non-Epson branded cartridges. So a decoder board must be used. The larger format SureColor printers have also been locked by Epson in North America. We are currently exploring options which we can support in these printers.