Compatible Replacement Tube by CardioTubes fits Littmann(r) MasterCardiologyI(r) and Littmann(r) Cardiology III(r)
Littmann Cardiology IV Diagnostic Stethoscope: Black & Champagne-Finis
Littmann Lightweight II S.E. Stethoscope with Black Tubing (2450) - Predictable Surgical Technologies
Amazon.com: Replacement Tube by CardioTubes fits Littmann Master Cardiology and Cardiology III Stethoscopes - 7mm Binaurals Dark Green TUBING : Industrial & Scientific
3M™ Littmann® Classic III™ Stethoscope | 3M United States
3M™ Littmann® Lightweight II S.E. Stethoscope, Burgundy Tubi
Amazon.com: Compatible Replacement Tube by CardioTubes fits Littmann(r) Classic II SE(r) Standard Stethoscopes - 5mm Black on Black Tubing : Industrial & Scientific