The Maxell Audio Recording Cassette Tape UR-90 is a 2 pack of blank cassette tapes designed for audio recording and duplication. With a normal bias of 90 minutes, these black tapes are compatible with Maxell drives and feature a 5.25 inch form factor. The tapes have a write speed of 60 minutes and are writable in both audio and CD-RW formats. Ideal for recording and storing audio content, these cassette tapes offer a reliable and efficient solution for preserving music, speeches, and other recordings.