Amazon.com: Compatible Replacement Tube by CardioTubes fits Littmann(r) Classic II SE(r) Standard Stethoscopes - 5mm Orange TUBING : Industrial & Scientific
Amazon.com: Kila Scopes Bell Stethoscope - Professional Dual Head Bell Cardiology & Diagnostic Stethoscope for Doctors and Nurses - with Accessories K770 Orange : Industrial & Scientific
MDF® MD One® Stainless Steel Dual Head Stethoscope, Rose Gold Finish Chestpiece, White Tubing MDF 777RG
Littmann Classic III Monitoring Stethoscope: Mirror & Caribbean Blue - Orange Stem 5874