This multipack contains one each of our remanufactured Ricoh GC21K, GC21C, GC21M and GC21Y refilled gel ink cartridges.Ricoh worked hard to produce their wonderful GC21 gel ink cartridge range, so our manufacturers were delighted to be able to offer us high quality alternatives to the whole range.. With the same estimated pageyield, each remanufactured Ricoh GC21 ink cartridge contains an amazing amount of ink.With many parts from the genuine GC21`s reused, these units continue the legacy of the original and reap the benefits of Ricoh`s precision engineering too. The remanufactured Ricoh GC21 multipack retains compatibility with the Aficio GX2500 and all of the other top-quality printers found listed on this page.