Keep your cassette player in top condition with the Crosley cassette audio head cleaner. Use the kit approximately every 40 hours of cassette usage to demagnetize the rollers and clean the heads of your cassette player. The kit is easy to use. Simply apply 2-3 drops of the included cleaning solution on the exposed tape on top of the included cassette, insert the tape into the player as normal, push "play" And let the cassette play until it stops. Kit includes head cleaning and demagnetizing tape, 20ML tape head cleaning solution, and plastic case.