Refill friendly HP 11 magenta cartridge	Refill friendly HP # 11 (C4837AA) compatible magenta ink cartridge as used in Business Inkjet 1700, 2230, 2250, 2280, 2300, 2600, 2800. Empty refillable cartridge fitted with auto reset chip. Note: Will not work combined with HP or compatible cartridges. Complete set required.  QTY: