STETHOSCOPE TUBING by Reliance Medical FITS LITTMANN® CARDIOLOGY IV® 11 COLORS | eBay
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 Pink TUBING : Industrial & Scientific
Amazon.com: Replacement Tube by CardioTubes fits Littmann Classic II SE standard Stethoscopes - 5mm BLACK TUBING : Industrial & Scientific