SPEED&trade; HP 74XL CB336WN & HP 75XL CB338WN Remanufactured Ink Cartridge (1 Black & 1 Color) for HP Photosmart Series Printer HP 74XL ink tank contains 25ml, yields up to 750 pages per cartridge @ 5% coverage. HP 75XL ink tank contains 21ml, yields up to 520 pages per cartridge @ 5% coverage. Compatible Printers: Photosmart C5580, Photosmart C4285, Photosmart C4440, Photosmart C5280, Photosmart D5360, Photosmart C4250, Photosmart C4385, Photosmart C5240, Photosmart C4210, Photosmart C4380, Photosmart C4450, Photosmart C5550, Photosmart C4480, Photosmart C5540, Photosmart C4280, Photosmart C4435, Photosmart C5250, Photosmart D5345, Photosmart C4240, Photosmart C4345, Photosmart C4580, Photosmart C4599, Photosmart C4550, Deskjet D4260, Deskjet D4360, Officejet J6480, Officejet J5740, Officejet J5780, Officejet J5750, Officejet J6450. Print Effectiveness: Make printing smoother, natural looking images and fewer granularities, producing best looking prints ever. Inks stop to come out automatically when printing is over. Technology: SPEED ink cartridges are adopted the leading Print Head Cleaning Technology, Print Head Testing Machine Technology, Eco Friendly Technology, Zero-energy Technology. The cartridges underwent an extensive process including, cleaning, testing the chip, ink vacuum refilling, totally pass to 27 production lines. All cartridges reach the standard when they are tested in any severe environment. Warranty: CE, TUV, ROHS, ISO9001, ISO4001 International Quality Certified.