3M Littmann Lightweight 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 hear different frequency sounds by simply adjusting the pressure on the chestpiece Soft sealing eartips provide an excellent acoustic seal and comfortable fit Snap tight, soft sealing eartips conform to individual ears for an excellent acoustic seal and comfortable fit Eartips snap firmly onto the ends of the eartubes and, for safety, require a significant effort to remove Contains: one tunablediaghragm and rim assembly for the stethoscope chestpiece, Black, one non-chill bell sleeve, black | Directions For Use: Read the user manual carefully | Safety Information: Read the label carefully before use Keep out of the reach of children