HP 21 Inkjet cartridges compatiable with : 

HP Deskjet 3910,3920,3930,3940D,1311D,1320D,1330D,1341D,1360D,1420D,1430D,1445D,

1455D,1460D,1468D,1520D,1530D,1560D,2330D,2345D,2360D,2430D,2445D,

2460D,2468F,2110F,2120F,2140F,2180F,2185F,2187F,

2210F,2212F,2235F,2240F,2250F,2275F,2280F,2290F,325F,335F,340F,350F,370F,375F,

380F,390F,394F,4135F,4140F,4172F,4175F,180F,4185F,4190, F4194

 PrintersHP Officejet 4315 ,J3680 , HPPSC 1410 series

*We can insure that goods have good price and high quality for   all clients.

* If there is any problem of quality you can return or replace us

More available inkjet cartridge details :

Inkjet cartridge used for HP 21