3M Littmann 40012 Stethoscope Spare Parts Kit Diaphragm Assembly for Classic II PediatricQuality and reliability in one convenient package Contains one floating diaphragm for the stethoscope chestpiece Contains a black rim for assembly of the diaphragm to the chestpiece Contains a Grey rim for assembly of the diaphragm to the chestpiece Product Description 3M Littmann Stethoscopes offers the high quality that medical professionals expect, and each replacement part and accessory meets the same demanding standards. Conveniently packaged in