McKesson Brand Reusable Aneroid / Stethoscope Set 23 to 33 cm Adult Cuff Dual Head Sprague Stethoscope Pocket Aneroid (1089467_EA) 1/EABlack enamel 300 mmHg manometer exceeds industry standard Navy blue nylon cuff with range markings to facilitate selection of correct cuff size and gauge holder Chrome plated deflation valve Threaded chestpiece drum of chrome plated zinc permits the use of five interchangeable chestpiece fittings an adult and pediatric diaphragm, and three bells (1 inches, 1 inch, inch) for complete diagnostic capability on most patients Double tube configuration