10-pack Spindle Box of BD-R 25GB Discs; Blu-ray discs are designed especially to store large HD video and audio files. So, you'll use fewer discs when you're backing-up, recording or duplicating high definition digital recordings - including your music library; All Verbatim Blu-ray discs are treated with a super hard coat to prevent scratches, resist fingerprints and reduce dust build-up; This single-layer Blu-ray disc is designed for one-time recording and should be used with BD-R hardware.