10PK. - CUSTOM AUDIO CASSETTES 15MIN. ECP(BASF)- Type B Normal Bias Tape, Recommended for recording or duplicating of Music,spoken word, educational, instructional or religious programs. Type: Type I Normal Bias Audio Cassette Minutes: 15 Minute (total), 7:35 Minutes (per side) Cassette Shell Color: Clear Minimum: 10 Piece Per Length BULK MEANS: NO CASSETTE BOX , NO CASSETTE LABELS, JUST A PLAIN CASSETTE TAPENRS