The SONY HF High Fidelity Normal Bias 90 min Audio Cassette Blank Tapes are new, recordable tapes perfect for recording and storing audio. With a capacity of 90 minutes, these cassette tapes come in a standard jewel case packaging. Manufactured in 2008, these Sony cassette tapes are ideal for capturing audio with high fidelity due to their normal bias setting. The unit quantity is one, and they are compatible with cassette players for convenient playback. Perfect for music lovers, students, and anyone looking to preserve audio recordings.