wholesales Professional mouthpieces for Digital Breath Alcohol Tester AT-818S
This is a prefessional mouthpieces for police digital breath alcohol tester AT -818S.
Package included:50pcs mouthpieces in total
Note:just mouthpieces for AT-818S ,machine do not included
Tips: In order to get more reliable record as possible, advise that you should make the test after least 45 minutes after drinking.