OKI offers the Replacement Printhead for the Microline 184 Turbo 320 and 321 dot matrix printers. This user-replaceable printhead has an average lifetime of 200 million characters in 10 cpi draft mode at normal 25% duty and 35% page density.Primary InformationConsumable Type : Printhead Printer Technology : Dot-matrix Output Color : N/A Compatibility : ML184Turbo / ML186 / ML320 / ML321 Yield : Up to 200 million characters Service & Support Type : 1 year warranty Features : 9 pin UNSPSC CodeUNSPSC Code : 44103112