Topkolor Show Real Color 950/951 XL.

It carries four cartridges one black, magenta, cyan and yellow. They’re never used and works on most HP Printers.

Can print 2300 pages per black, 1500 pages per color ink cartridge

HP Officejet Pro 8100 8600 8610 8620 8630 8640 8650 8660 8615 8616 8625 251dw 276dw Printers