SAME TONER FOR LESS: Our repackaged cartridges for printers are real OEM cartridges filled with genuine OEM Toner inside. After inspection and verification of every new, unused, and undamaged toner, the code is updated to ensure compatibility with your printer. PAGE YIELD: Each 4 pack set yields 71,000 pages. The black cartridge yields approximately 26,000 pages, while cyan, magenta, and yellow can deliver 15,000 pages each. Maximize affordable prints with unused original toner without paying more for brand name cartridges. HIGH-QUALITY GENUINE TONER: Get an authentic OEM printer toner with vibrant colors and true line detail from a solution that saves you money. No fading and no streaking guaranteed. Manufactured in America. INDUSTRY PREFERRED MICROCHIPS: Our printer cartridges are re-coded to work with North American printers and packed in a plain, easy-to-open box. Genuine OEM components mean that quality is not sacrificed. REORDER NUMBERS FOR EACH COLOR: This 4 pack contains the following colors: black, cyan, magenta, and yellow toner to meet all your printing needs. Reorder numbers are 006R01513 006R01514 006R01515 006R01516 respectively. CERTIFICATIONS: We are ISO 9001, ISO 14001, CE certified. Professor Color’s Re-Coded OEM Toner Cartridge Replacement 4 Color Pack for Xerox WorkCentre is a laser printer toner compatible with 7525/7530/7535/7545/7556, 7830/7835/7845/7855, 7830i/7835i/7845i/7855i, 7970/7970i, and EC7836/EC7856. We use genuine toner for high quality prints available in an economical way. After 45 years manufacturing premium toners, Professor Color is proud to provide the highest-quality re-coded toner cartridges available in the USA. Maximize your home or office printers with real OEM printer cartridges modified for your machine. We provide a practical way to print with uniquely engineered printing solutions.