Amazon.com: 3M 6163 Littmann Cardiology IV Black Chestpiece Stethoscope with 27" Black Tube : Industrial & Scientific
Amazon.com: eSteth Cardiology Stethoscope - Professional Tool for Cardio Diagnostic - Ultra Sensitive Single Head Chest Piece, Broad Headset - Extra Ear Tips & Non-Chill Ring - 30" Tubing, Black Stethoscope :