Quill Brand® Toner and Ink cartridges are guaranteed to meet the O.E.M. (Original Equipment Manufacturer) yield and performance standards. Quill imaging products are manufactured to the highest standards in materials and workmanship. If you are not completely satisfied, Quill will replace the product, refund your money or credit your account. Should a defect in our product necessitate a repair to your machine, Quill will reimburse you for the cost of repair (with proper documentation).