Smart and Eazy Corp. guarantees each Toner and Ink Cartridge to be free of defects and workmanships for 1 year after purchase.Smart and Eazy Corp. warrants that, under normal use, our cartridges will not cause damage, abnormal wear, or deterioration to printer. While we work to provide you the best quality product, on occasions due to a manufacturers fault we cannot be held responsible and we have a return & refund policy in place for the same.