Retro, disco vintage, Sparkomatic, "8 track cassette adaptor", made in Japan. This adaptor is designed to allow you to play regular cassette tapes in your 8-track stereo player. The cassette fits into the adaptor that is made like am 8 track tape cartridge. We haven't tested this, but the drive spindle for the cassette tape turns when we move the rubbed wheel in the "8-track" head and the magnetic tape reading head moves in and out of engagement with the play switch. This does have some wear.