... 6-9mm 4.SS /Brass Thermowell 40--200mm Pressure Gauge/Manometer SpecificationTemperature Gauge/Thermometer SpecificationSizes of Case:2"/50mm, 2.5"/63mm ... ,Back/AxialConnections:Brass, Stainless SteelBrass, Stainless SteelThreads:1/8",1/4",3/8",1/2",BSP,NPT,G1/2…,M20*1.5 ... ,M8*1…1/8",1/4",3/8",1/2",BSP,NPT,G1/2…,M20*1 ...