FREE TWO-DAY NATIONWIDE SHIPPING!. New MICR CF258A Toner Cartridge for check printing. BANK TESTED MICR cartridge is tested using an Optical and Magnetic Tester to insure high signal strength for Bank Recognition Compliant with the US and International Banking Systems. Prints 3000 Pages Trusted Lifetime Guarantee Backed by 25 years of industry experience, Ampro replacement toner cartridges come with responsive U.S.-based customer service and a lifetime guarantee for quality.