Coated on the highest quality 1/4" 1.0 mil polyester film, MDS-36 provides excellent performance and reel-to-reel consistency. Our new formulation offers high output and low noise with improved recording economy, and is bias compatible with ATR Master Tape requiring minimal adjustment for optimal performance. This tape will hold 1:36:00 of music at 7.5 IPS, and comes in a high quality locking plastic box. This is brand new high quality tape, unlike much out there that is decades old.