Thank you for viewing. AXIA K METAL cassette tape, TYPE 4, offering the best sound quality. - Brand: AXIA (manufactured by Fuji Photo Film) - Type: K METAL - Size: 100 - Features: TYPE 4 - Slim Case: Black slim case - Sound Quality: Best sound - Metal Position: METAL POSITION I believe the 100-minute type is not often listed. You can record about 50 minutes per side, so it's perfect for long versions of music. This is an unopened item, but it has been stored for a long period, so please understand that we cannot provide any warranty.