3M - 2144L Littmann Master Classic II Stethoscope Black Tube, 27 inch.
Littmann Stethoscope Master Classic II Black - Stethoscope Littmann
Littmann Master Classic II Stethoscope, Black Edition, 2141 - Stethoscope .com
Littmann Master Classic II Stethoscopes - Med-Plus Physician Supplies
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