Features: Made of 304 stainless steel which is durable and reliable. Fits with automobile exhaust pipe whose diameter is 51mm. The pressure range: -2 psi - 5.5 psi. The valve is closed at free condition. Rod end bearing linked between actuator and gate lever. Specification: Condition: 100%Brand New Material: Stainless Steel Diameter: 2in Suitable for Vehicles: Various Types of Vehicles Installation Position: Automobile Exhaust Pipe Installation Methods: Welding Installation Driving Source: Vacuum Suction Valve Status: Normally Closed Closed Style Pressure: About 1 Bar Package List: 1* Vacuum Activated Exhaust Cutout Notice: 1. Please allow 1-3cm error due to manual measurement and make sure you do not mind before ordering. 2. Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering. .