3M Littmann Stethoscope Spare Parts Kit, Master Cardiology, Gray, 40018 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 the stethoscope models. | Uses: Replacement parts and accessories make repairs simple | Salient Features: Quality and reliability in one convenient package Contains: one tunable diaghragm and rim assembly for the stethoscope chestpiece, Gray Replacement of the eartips and diaphragm assembly on the Master Cardiology stethoscope | Directions For Use: Read the user manual carefully | Safety Information: Read the label carefully before use Keep out of the reach of children