Amazon.com: Replacement Tube by CardioTubes fits Littmann Master Cardiology and Cardiology III Stethoscopes - 7mm Binaurals Dark Green TUBING : Industrial & Scientific
3M Littmann Cardiology IV Stethoscope - Hunter Green-93134
Stethoscope - Littmann Classic II SE Pediatric – Mobile Uniforms
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ADC 603 Clinician Stethoscope, Dark Green, 603DG - Stethoscope.com
Amazon.com: Replacement Tube by CardioTubes fits Littmann Master Cardiology and Cardiology III Stethoscopes - 7mm Binaurals Dark Green TUBING : Industrial & Scientific
Littmann Cardiology IV Stethoscope, Hunter Green, 6155 - Stethoscope.com