MediChoice Bowles Single Head Stethoscopes are comprised of chrome-plated zinc, diaphragm only chest piece with traditional raised stem design. Each is adjustable with chrome-plated brass binaural and PVC ear tips. The flexible, thick walled PVC tubing minimizes background interference. The stethoscopes have a diaphragm diameter of 1.625 inches, overall length of 30 inches and weigh 4 ounces. MediChoice is Owens & Minor's brand of medical-surgical products and durable medical equipment that is expanding to meet the changing needs of healthcare. MediChoice, your choice for quality, value and unmatched service. Search MediChoice for additional product offerings.