This is HP's own 131A tri-pack (part number U0SL1AM): one cyan, one magenta and one yellow Original LaserJet toner cartridge in a single multi-pack box, for the HP LaserJet Pro 200 color M251 printer and the LaserJet Pro 200 color MFP M276 multifunction. Each colour cartridge is rated at about 1,800 pages, the average composite yield declared under ISO/IEC 19798 with continuous printing, and real-world yield depends on what you print. It suits small offices, workgroups and busy home users who print colour documents and marketing material regularly and would rather keep a full set of colours in stock than reorder one at a time. Black toner is not included and is sold separately (131X/131A black). In the box are the three toner cartridges and a recycling guide. The multi-pack carton measures roughly 365 x 300 x 110 mm and weighs about 1.8 kg. Operate the cartridges at 15 - 25 °C and store them between -20 and 40 °C.