3M Littmann Tunable Diaphragm and Rim Assembly (Adult/Black)

Tunable Diaphragm and Rim Assembly for Littmann® Cardiology IIITM (large side), Cardiology II S.E., Master Classic IITM, Classic II S.E. and Select Stethoscopes, Black Rim. These assemblies allow for easy replacement of the tunable diaphragm and rim on appropriate Littmann stethoscopes. The tunable diaphragm allows the user to conveniently alternate between the low- and high-frequency sounds without turning over the chestpiece.