entrust Performance Plus Sprague Rappaport Scope - Dark Green. Convertible chestpiece permits the use of five interchangeable chestpiece fittings -- an adult and pediatric diaphragm, and three bells (1-1/4 inch, 1 inch, 3/4 inch).. Patented valve mechanism virtually eliminates acoustic leakage.. Chestpiece key facilitates diaphragm replacement.. Gasket-sealed system for improved acoustics.. Double-tube configuration in 22 inch length for improved acoustic separation.. Adjustable chrome-plated binaurals.. Complete with an eight-piece accessory kit.
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