Material: brass or aluminum alloy or zinc or steel, corrosion resisting or steel, carbon
Iii part name assigned by controlling agency: stethoscope adl sz 24" lg two posn valve brass/alum/zinc/crs/cs
Special features: two position valve; furnished w/one pair y2 in. ear tips of mushroom design,two extra diaphragms; for routine usage; component of cardiopulmonary resuscitation kit,6545-01-079-4253