The Pro's Combo II SR Pocket Aneroid and Sprague Kit includes one Prosphyg 768, one Adscope Sprague 641, and a deluxe carry case. The Prosphyg 768 Pocket Aneroid Sphyg provides high quality at an affordable price. It features a contemporary black enamel 300mmHg manometer that provides day-in, day-out dependability, exceeding industry standards. The Adcuff nylon cuff displays ADC's Size Guide marking system that prevents mis-cuffing. Chrome-plated brass valve releases air. The Adscope 641 Sprague Stethoscope offers a double tube design for improved stereo separation and a 22" tubing length. The threaded chestpiece drum has five interchangeable fittings for complete diagnostic capability on most patients. Unique valve mechanism eliminates acoustic leakage.