SpecificationBlow Off Valve: 50mm Flange Diameter; Holds Up to 35PSI Boost Pressure CNC Machined Billet Aluminum Body Easy Assembly, Weld-On Aluminum Flange,O-Ring and Stainless Steel V-Band Clamp Dual Spring System Promoted Response & Allows for High Boost Pressures Hard-Anodized Valve for Increased Air Flow Powder-Coated Anodized and Polished Finish Vents via Full 360 Degree of Blow Off Valve Color: Black Condition: 100% Brand New Warranty: one year warranty for any manufacturing defectPackage Includes1 X 50mm Blow Off Valve 1 X Aluminum Weld-On Flange Adapter 1 X V-Band Clamp (You will get exactly as shown in the picture above)Note* Professional installation is highly recommended (No Instruction Included) * For any needs please contact us