4.7 GB MAM-A (Mitsui) White Inkjet Hub Printable/GOLD 8X DVD-R 50-Pak in Cakebox Professional, archival grade media. "White INKJET HUB PRINTABLE" 8X DVD-R Compatible. Finally a DVD suitable for storing your most precious files! The MAM Gold Archive Grade DVD is designed for applications requiring long-term storage of sensitive data, video or music files. The reflective layer is comprised of 24 karat gold, which allows maximum resistance to chemical breakdown -- one of the major causes of disc failure. 4.7GB storage capacity. The printable surface is perfectly suited for high-resolution color inkjet printing. No stacking ring or groove allows full-face, hub printing (unprintable clear center hub is 23.5mm wide). Record surface is purple. The most recent test results predict the lifetime of the MAM-A Gold Archive DVD to be 116 years.