<ul> <li>Contains one replacement tunable single Chest piece diaphragm for the adult side of the stethoscope and two Extra Ear Pieces</li> <li>Diaphragm fits Cardiology IV (4) . Classic III (3), Classic II (2)Stethoscopes</li> <li>Accessories kit Contains two Bonus Extra Ear Pieces</li> <li>Fits all Brands: 3M Littmann, FriCARE, Ever Ready, MDF Instruments, Prestige</li> <li>For Doctors, Nurses, veterinarians. Classic III and Cardiology IV</li> </ul>