Acumen 4x BD-R Blu-ray 25GB Single Layer Blank Media Discs with Non-Branded Silver Top (25-Pack) Up to 4x Writing Speed for selected drives Non-Branded Silver Top Surface Large 25GB storage space that equate to 5 DVDs Recordable: This single-layer Blu-ray disc is designed for one-time recording and should be used with BD-R hardware Quantity of 25 discs in a pack. Best Value for a 25 pack!