Description: Product List: 1 manually adjustable boost controller set.Material: Boost Controller Kit is made of quality aluminum alloy, which is strong, wear resistant, and can be used for a long time.Function: Boost Controller Kit plays a role in regulating air pressure and improving engine performance. It can allow the exhausting gas relief valve to open later and increase the boost value.Easy to install: Adjustable Manual Turbos Boost Controller has a simple design, is easy to install, and is convenient and fast. No complicated operating steps are required.Lightweight: Boost Bleed Valve adopts a lightweight design, which is more convenient to carry. It is convenient for you to replace and use it at any time. Applicable to turbos vehicles. Specification: Material: Aluminum Alloy Size Chart: 2.1cmx6.2cm/0.83inchx2.44inch Package Includes: 1Boost Controller Kit Note: Please allow slightly errors 1-2cm differences due to manual measurement.