Our Formax Compatible Ink Tank delivers excellent quality, reliability & performance, and is fully compatible with ColorMax7 and ColorMax8 envelope printers.  Featuring plug & play functionality and Formax printhead compatibility, the Formax Compatible Ink Tank prints vibrant full CMYK envelopes with excellent color reproduction, fast dry times and UV fade resistance. Our ink is 100% compatible with Formax ColorMax printers. All Mail Green products are expertly remanufactured in the USA and backed by a 100% satisfaction guarantee.