ADC Adscope® 603 Clinician Stethoscope, Light Blue Tubing, #
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
Amazon.com: Prestige Dualhead Teal Blue Stethoscope : Industrial & Scientific