Amazon.com: (Stethoscope Binaural) Replacement Tube by Reliance Medical fits Littmann® Classic II Pediatric, Classic II SE, Select, Master Classic II, and Infant Stethoscope - Orange TUBING : Industrial & Scientific
Littmann Cardiology IV Diagnostic Stethoscope: Champagne & Burgundy Tube 6176 - Littmann Cardiology IV Stethoscope
3M Littmann Master Cardiology Stethoscope, Black Tube with Standard Finish, 27"