Compatible Printers: HP OfficeJet Pro 6960 (J7K33A); HP OfficeJet Pro 6978 (T0F29A#B1H); HP OfficeJet 6954 (P4C81A); HP OfficeJet Pro 6975 (J7K36A); HP OfficeJet Pro 6968 (T0F28A#B1H) Compatible ink types: Pigment-based; Ink drop: 8.7 pl (cyan, yellow), 8.6 pl (magenta) Up to 2x more prints with Original HP ink vs refill cartridges