Black 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 (1¼ inches, 1 inch, ¾ inch) – for complete diagnostic capability on most patients. Double tube configuration. Proprietary valve mechanism eliminates acoustic leakage. Adjustable aluminum binaurals. Convenient 22 inch tubing length in 31 model options. Complete with an accessory pouch containing the bell chestpieces, chestpiece key, two spare diaphragms, one pair of hard ear tips and one pair of soft clear ear tips. Weighs 7 oz.. Overall length 30 Inches. . WARNING: This product can expose you to di(2-ethylhexyl)phthalate (DEHP), which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information, go to www.P65Warnings.ca.gov.