Premium Compatibles - HP CF281AD 81A 2 Pack Black Toner Cartridges 21K Yield for use in HP Enterprise Flow M604, M604dn, M604n, M605, M605dn, M605n, M605x, M606, M606dn, M606x, M630, M630f, M630h, M630z Genuine PCI Brand Quality Made in the USA. TAA / GSA Compliant.