Brother LBX099001 600 dpi Replacement Printhead Kit for TJ-4620TN Industrial Printers
Brother LBX099001 Replacement Printhead Kit for Titan TJ-4620TN Industrial Printers
300dpi Replacement Printhead Kit for TJ-4520TN and TJ-4522TN

Brother LBX098001 300 dpi Replacement Printhead Kit for TJ-4520TN and TJ-4522TN

Brother LBX097001 Replacement Printhead Kit for Titan TJ-4420TN and TJ-4422TN Industrial Printers
Genuine Brother LBX097001 203 dpi Replacement Printhead Kit for TJ-4420TN and TJ-4422TN

Brother LBX093001 Replacement Printhead Kit for Titan TJ-4121TN and TJ-4120TN Industrial Printers
Genuine Brother LBX093001 300 dpi Replacement Printhead Kit for TJ-4121TN & TJ-4120TN