Adcuff nylon cuff with ADC's proprietary Size Guide marking system prevents mis-cuffing|Adflow chrome-plated brass air release valve with micro-threads for precision deflation control|Adflow filter screen check and deflation valves reduce dust build-up|Chrome-plated precision crafted 300mmHg manometer|Luminescent dial features bold numerals and extended graduation marks for easy reading in all light conditions and from virtually any angle