WE-ORX01 Gas Detector: 1. Convenient to use 2. Good quality and price WE-ORX01 Gas Detector:Complete set of mask included oxygen hoses and all accessoriesOne oxygen bottle with a suitable volume that equipped with pressure regulators,etc.Accessories:2L oxygen bottle,oxygen pressure regulator,oxygen mask,artificial respirator,breathing mask,pliers,mouth gag,oxygen hose. Gas Detector