Keep your Littman stethoscope in top form with this replacement tunable diaphragm and rim kit. With a tunable diaphragm you are able to switch between low- and high-frequency sounds without turning the chestpiece over. This kit is compatible with the Littmann Cardiology III (large side), Cardiology II S.E., Master Classic II, Classic II S.E. and Select Stethoscopes. It features a Littmann logo and a black rim.