NEW! 6187C 3M Littmann Cardiology IV Diagnostic Stethoscope, Stainless-finish Chestpiece, Midnight Blue Tube (27″) – Student Medical Shop
3M Littmann Cardiology IV Stethoscope, Standard-Finish Chestpiece, Black Tube, Stainless Stem/Headset, 27 inch, 6152 - Walmart.com
3M™ Littmann® Lightweight II S.E. Stethoscope – BV Medical
Amazon.com: Replacement Tube by CardioTubes fits Littmann Master Cardiology and Cardiology III Stethoscopes - 7mm Binaurals Dark Green TUBING : Industrial & Scientific