Medium earcones, used with ET-4 (bag of five). Works with any Telex Telethin driver that is connected to the Telex ET-4 eartube. Fits comfortably inside the ear canal and allow audio to pass through from the driver cleanly and clearly. If using the Telex ET-2 or Telex ET-3 eartubes, use the Telex EM series earmolds.
Works with any Telex Telethin driver that is connected to the Telex ET-4 eartube