Amazon.com: Durabasics Classic 3, Cardiology 3 & Cardiology 4 Stethoscope Accessories Kit for Littman Stethoscope Replacement Parts & Littmann Stethoscope Parts - Fits Classic III, Cardiology III & IV - Black : Industrial & Scientific
Littmann Stethoscope Spare Parts Kit, Classic II SE, Gray, 40006 - Stethoscope.com
3m Littmann Stethoscope Spare Parts Kit, Lightweight Ii S.e., Light Brown
Littmann Lightweight II SE 2450 Reliable Auscultation