This is a new premium MICR Cartridge for check and barcode printing. It is custom built to replace HP C7115A and Troy 0281080001 toner cartridges. HP LaserJet and TROY MICR Printers only accept MICR cartridges that have been modified to TROY specifications. MTI © MICR cartridges are specially engineered to include the TROY modification. Every cartridge is factory-tested and ISO approved. We offer an exclusive 30-day customer satisfaction guarantee and 2-year manufacturer warranty. Our dedicated customer care staff is available 9 a.m. to 7 p.m, Monday through Saturday, to answer any questions and provide technical support.