Use with Dual tube: GE-Marqutte, Datex-Ohmeda GE(Marqutte) with male quick-connect type connector, Dinama plus, XL,SX/XP,8100 series, Each GE corometrics; Critikon; Datex-Ohmeda-with one male and one female quick connect type connector; CAS; New Welch-Allyn vital signs models-with threaded type Critikon style connector.