Oki ML 184T, 186, 320 and 321 Printhead 
OKI offers the Replacement Printhead for the Microline dot matrix printers. This user-replaceable printhead has an average lifetime of 200 million characters in utility mode at normal 25% duty and 35% page density.
- Features: 9 pins
- Yield: Up to 200 million characters
- Compatibility: Oki Microline ML 184 Turbo, ML 186, ML 320, ML 321. Genuine Oki Data – NOT clone.