Ridata/Ritek 8.5GB 8X Double Layer DVD+R (25-Pack Spindle) New technology allows material to be either read or recorded on one layer without affecting material on the other layer Largest compatible DVD back-up and data archiving format for computer drives Ideal for archiving home movies Middle zone length can be decided by application/PC in order to shorten finalize time 25-pack; storage Capacity: 8.5 GB of storage capacity on a single-sided disc