3M Littmann Classic II Spare Parts Kit offers the high quality that medical professionals expect and each replacement part and accessory meets the same demanding standards. Conveniently packaged in kits that correspond to our stethoscope models. | Uses: Replacement parts and accessories make repairs simple | Salient Features: Tunable diaphragm technology provides clinicians to hear different frequency sounds by simply adjusting the pressure on the chest piece Eartips snap firmly onto the ends of the eartubes Requires a significant effort to remove It contains: small (1/2 inch) nonchill bell sleeve, black One tunable diaphragm and rim assembly for the stethoscope chestpiece Snap tight, soft sealing eartips conform to individual ears for an excellent acoustic seal and comfortable fit One tunablediaghragm and rim assembly for the stethoscope chestpiece, black | Directions For Use: Read the user manual carefully | Safety Information: Read the label carefully before use Keep out of the reach of children