Amazon.com: Compatible Replacement Tube by CardioTubes fits Littmann(r) Classic II SE(r) Standard Stethoscopes - 5mm Black on Black Tubing : Industrial & Scientific
10 Pack - Adjustable Stethoscope Name Tag - Fits Any Size Tubing! Steth Label - Compatible with Littman Tubes, Round Personalized Identification for Nurses Doctors & More by Specialist ID (Black) - Walmart.com
Amazon.com: Compatible Replacement Tube by CardioTubes fits Littmann(r) Classic II SE(r) Standard Stethoscopes - 5mm Pink TUBING : Industrial & Scientific
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