Used for leak check test at intermediate pressure using the 30 psi gauge and testing first stage regulator. The 35 water column gauge is used for testing low pressure second stage regulator set point and lock up press. Provided in a hard case.Includes 30 psi and 35 in. WC GaugesIncludes 6 type B valvesLP gas safety test equipmentNote: model number suffix A or B designates which type of pressure tap valve will be used; the A designates the type VA valve Schrader and B designates the type VB valve 1/4 in. are. These products contain a chemical known to the state of California to cause cancer and birth defects or reproductive harm – https://www.p65warnings.ca.gov/chemicals/lead-and-lead-compounds