Adcuff nylon cuff with adc's proprietary size guide marking system prevents mis-cuffing|Assembled, inspected, and packaged in the usa from foreign components|Dip molded latex inflation bladder withstands heavy use, latex inflation bulb, fitted with filter screen end valve to reduce dust build up|Extended scale plate graduation marks reduce parallax for easier viewing from virtually any angle|Precision crafted 300mm hg no-pin stop manometer with classic black baked enamel finish, exceeds industry standards