This is a tool for breaking off the tabs of music cassette tapes (audio cassette tapes). Although it is an unopened item, the bag shows signs of aging. This is a very old item, over 40 years old, so please refrain from purchasing if you are sensitive to such things. The item in the fourth photo is unique, and it's unclear if it's rare or a printing error, but the printing on the bag is shifted downwards, and the tool itself is inserted backwards. This is a set of 4. Includes 1 red tape stopper. I am also selling other Showa-era retro items. If you purchase multiple items, the shipping cost will be reduced, so please send me a message.