TIG06Zinc body with chrome-plated friction ring, range 0-160 psi/0-220lbs, units-bar/kpa/psi/kg/cm2 TIG08Zinc alloy and aluminum body with zinc alloy air chuck, range 10-100/160/220 psi, air inlet-1/4″ NPT TIG07Digital gauge,range 0-160 psi/0-10 bar, units-bar/kpa/psi/kg/cm2, accuracy (0-100 psi: 0.5 psi/100-150 psi: 1 psi) TIG09Digital gauge, zinc alloy and aluminum body with copper air chuck, range 10-200 psi, air inlet-1/4″ NPT