Popular with overseas customers. ◎TEAC CT90 INSTRUMENTATION TAPE HEAVY DUTY Quantity: 1 box (10 rolls) ※ All unused. The following is written on the back: THIS IS BACK SIDE. UNUSEABLE. ■Condition These have been stored for a long time. They are unused in the condition they were purchased, but please note that they were not originally individually packaged. Recording has been confirmed with a separate packaged item. ※※※ In those days, tape was used as a recording medium for computer data. Software for MSX computers was also left. I will sell these to those who need them. Computer Recording media SAVE / LOAD MSX