Why own just a Sprague stethoscope when you can own an Adscope™ Sprague? The Adscope™ 641 Sprague features: Threaded chestpiece drum of chrome plated zinc permits the use of five interchangeable chestpiece fittings - an adult and pediatric diaphragm, and three bells (1 1/4", 1", 3/4") - for complete diagnostic capability on most patients Latex-free, double tube configuration Proprietary valve mechanism eliminates acoustic leakage Adjustable chrome-plated brass binaurals Convenient 22" tubing length in choice of 29 fashion tubing colors Complete with an accessory pouch containing the bell chestpieces, chestpiece key, 2 spare diaphragms, one pair of mushroom eartips, and one pair of silicon eartips Weighs 7 oz. Overall length 30" 5 Year Warranty Inspected and packaged in the U.S.A.