Philips 0005 Executive 30 Minute Mini-Cassette Tape - 5 pack Leaderless Audio Mini Cassette Tape. 15 Minutes Per Side for a Total of 30 Minutes Per Cassette. Tape Size: 2 ¼ inches wide x 1 ½ inches tall. Pack of 5 Mini Cassette Tapes. Tape comes with clip holder which attaches mini cassette to file folder.