This remanufactured, or reman, replacement HP printhead is meant for use on our 412ml compatible ink systems utilizing HP thermal inkjet technology and are not intended for use on a genuine HP bulk ink system, or on our 423ml ink systems. We follow only the strictest guidelines and procedures to offer this replacement printhead as remanufactured. Each printhead is post-tested prior to shipment to you, so as to insure print quality and satisfaction. As a further committment to our dedication of providing our customers with only the highest quality product for our, compatible, HP c6119a, bulk ink systems - a One year warranty accompanies each printhead with free US Priority Mail or UPS.