... Compatible parts , Supervior quality, satisfiation Price and after-serivce. HP 21 Inkjet cartridges compatiable with : HP Deskjet 3910,3920,3930,3940D,1311D,1320D,1330D ... ,394F,4135F,4140F,4172F,4175F,180F,4185F,4190, F4194 PrintersHP Officejet 4315 ,J3680 , HPPSC 1410 series*We can insure that ... MLM12A1970/50BLKLM12A1980/60K/C/MLM10N0016/17BLKLM10N0026/27K/C/MSAMm40BLK Inkjet cartridge used for HP 21