... /8", 1/2",5/8"&3/4" O.D. tubingCM-808-A In inch:3/16",1/4",5/16",3 ... /8",1/2",5/.8"&3/4" O,D, tubingCM-808-M In Metric: 6mm,8mm,10mm,12mm,14mm,16mm&18mm ... /8",1/2",5/8"&3/4" O.D.tubingCM-808-A-R410A For R410A bar: 3/16",1/4",5 ... /8",1/2",5/8"&3/4" O.D. tubingCM-808-M-R410A For R410M bar:6mm,8mm,10mm,12mm,14mm ...