MDF® ProCardial Core™ Cardiology Stainless Steel Dual Head Adult-Pediatric Stethoscope with Adult Cardiology Bell Convertible Attachment Ultra sensitive diaphragm, Convertible Chestpiece Change effortlessly between Adult and Pediatric sized chestpieces for patient specific diagnostics, SafetyLock™ Eartip Adaptors, Patented safety feature holds eartips firmly in place and allows for safer insertion of stethoscope in ears, Extra Deep Bell, Our meticulously engineered bell is crafted deeper than others to maximize acoustic integrity. Thicker, Longer Tubing. Premium Sound.ErgonoMax® Headset Product ID: StethCardMDF