Stainless steel threaded chest piece drum allows rapid conversion from a pediatric diaphragm to an adult bell. Non-chill bell and diaphragm retaining rims for patient comfort. Stainless steel binaurals are fixed at 15° angle for greater comfort. Custom-molded bi-lumen, PVC tubing and Adsoft ear tips. Complete with an accessory case containing the adult bell, two spare diaphragms, and two sets of ear tips. Scope I.D. tag included.