Brother TN339 Original toner cartridge extra high yield BKCMY 4 pack combo by Brother

All products come with 90 days from the date of Purchase, any product to be found defective in materials and/or workmanship during the 90 days warranty period will be replaced at no cost, under normal use, will not cause damage, abnormal wear, or deterioration to any equipment for which the consumable was intended.
This warranty become null and void if the warranted cartridge is disassembled in any way, or if the cartridge is handled, stored or used in any manner considered abnormal.
Liability under this warranty shall be limited to the replacement only.