The ADC Sprague's exclusive design features an improved valve mechanism that virtually eliminates acoustic leakage and a chestpiece key to facilitate after market service.

Features:
• Threaded chestpiece drum of chrome plated zinc permits the use of five interchangeable chestpiece fittings - an adult and pediatric diaphragm, and three bells (11/4", 1", 3/4") - for complete diagnostic capability in most patients.
• Latex-free, double tube configuration.
• Proprietary valve mechanism eliminates acoustic leakage.
• Adjustable chrome-plated brass binaurals.
• 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.
• Inspected and packaged in the U.S.A.
• Convenient 22" tubing length.
• Weighs 8 oz. / Overall length 30".
• 5 Year Warranty.