InkOwl Reset Flag Gear Kit Replacement for Brother TN-720, TN-750, TN-780 Starter (1-Pack)

Starter BROTHER BROTHER TN-720, TN-750, TN-780, TN-3310, TN-3330, TN-3340, TN-3360, TN-3380, and TN-3390 cartridges require that a flag gear be installed to function after being refilled. Printer models: Brother DCP-8110DN, DCP-8150DN, DCP-8155DN, DCP-8250DN, HL-5440D, HL-5450DN, HL-5450DNT, HL-5450DW, HL-5470DWT, HL-6180DW, HL-6180DWT, MFC-8510DN, MFC-8520DN, MFC-8710DW, MFC-8910DW, MFC-8950DW, MFC-8950DWT