Lexmark (#71) 3200, 5000, 5700, 5770, 7000, 7200, 7200V, X63, X73, X83, X85, X125, X4250, X4270, Z11, Z31, Z42, Z43, Z45, Z51, Z52, Z53, Z82, Optra 40, 45 Moderate Yield Black Ink Cartridge (271 Yield), Part Number 15M2971