Brother TN-550 Toner Refill Kit so you can only refill

so you can only refill NON starter cartridges which will already have a flag gear inside of the cartridge

Brother TN-550 Toner Refill Kit

HL Series HL-630 HL-630M HL-630Plus HL-631 HL-641 HL-645 HL-645M HL-645Plus HL-650 HL-655M HL-660 HL-660Plus HL-660PS   HL-665

Epson AL-C4200 High Yield Cyan Toner Refill Kit for C13S050244 Toner Cartridge & Epson Aculaser AL-C4200 C4200 AL-4200 Printers

Brother TN-550 Toner Refill Kit so you can only refillBrother TN 550 Toner Refill Kit This toner refill kit will produce the same amount of pages as an OEM cartridge would. This Refill Kit includes: 1 high yield bottle of toner Easy to follow instructions Funnel caps for easy pouring Gloves to keep your hands toner free Magnetic toner cloth for easy toner clean up For use in the following printers HL Series HL 5240 HL 5250DN HL 5250DNT HL 5250DNLT HL 5270DN HL 5280DW MFC Series MFC 8460N MFC 8470DN MFC