IPS Compatible for Lexmark 64016HE Rtn. Prg. Mono Toner 21K (HC) This product will fit the following Lexmark printers: T640/T640dn/T640dtn/T640n/T642/T642dn/T642dtn/T642n/T644/T644dn/T644dtn/T644n/T644tn
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