Amazon.com: Compatible Replacement Tube by CardioTubes fits Littmann(r) MasterCardiologyI(r) and Littmann(r) Cardiology III(r) Stethoscopes - 7mm Binaurals BLACK TUBING : Industrial & Scientific
Amazon.com: Stethoscope Tubing by Truaevum - Compatible Replacement Kit fits Littmann(r) Standard Edition(r) Stethoscope - Single Bore Tube Binaural K5 Black : Industrial & Scientific
Amazon.com: (Stethoscope Binaural) Replacement Tube by Reliance Medical fits Littmann® Classic II Pediatric, Classic II SE, Select, Master Classic II, and Infant Stethoscope - Light Blue TUBING : Industrial & Scientific
NEW! 6186C 3M Littmann Cardiology IV Diagnostic Stethoscope, Black Matte-finish Chestpiece, Alabaster Tube (27″) – Student Medical Shop
MDF® Instruments Tips | How to Replace Stethoscope Tubing
Amazon.com: Compatible Replacement Tube by CardioTubes fits Littmann(r) Classic II SE(r) standard Stethoscopes - 5mm BURGUNDY TUBING : Industrial & Scientific