Replaces Neopost and Hasler IM56INK and IS56INK. For use with Neopost IS5000, IS5000A, IS5000B, IS5000C, IS6000, IS6000A, IS6000B, IS6000C and Hasler IM5000, IM5000A, IM5000B, IM5000C, IM6000, IM6000A, IM6000B, IM6000C postage meter models. Fluorescent Red Ink. Up to 100,000 prints.