Case Logic PSR-50 25 Double Sided ProSleeve II (holds 50) 25 double-sided ProSleeves hold 50 discs or 25 discs with booklets Protective CD storage sleeves with patented writable strip to customize your CD collection (Permanent markers work best) Compatible with: BNB-24, BNB-48; BKB-24, BKB-48; BCB-24, BCB-48; DAVM-24; PVB-30, PVB-60; PSBS-30, PSBS-60; standard 3 ring binders