NE IMAGE© - 4 PACK - Toner Reset Gears for Brother TN-221, TN-225 for MFC-9130CW, MFC-9140CDN, MFC-9330CDW, MFC-9340CDW HL-3140CW, HL-3150cdw, HL-3170CDW, DCP-9020CDW Printers Refill
Package Includes: 4 NE IMAGE Reset GearsYou will need these in order to convert your low yield cartridge into high yield cartridges.The printer displays a "toner life end" message if no reset gear is detected. A reset gear must be installed in any starter cartridge in order for the printer to function properly once the cartridge has been refilled and re-installed in the printer.