Do it Wiser Compatible Ink Cartridge Replacement for HP 972A HP 972 HP Pagewide Pro 477dw 377dw 477dn 577dw 377dn 577z 452dn 452dw 552dw P55250dw P57750dw (4-Pack)Do it Wiser Compatible Ink Cartridge Replacement for HP 972A HP 972 HP Pagewide Pro 477dw 377dw 477dn 577dw 377dn 577z 452dn 452dw 552dw P55250dw P57750dw (4-Pack)