Specifications: 1. TS16949 quality system certified manufacturer . 2. Full copper winding, unlike other inferior products that are made of copper-clad aluminum material. 3. Shut off pressure: 2.5-4 P.S.I. ; Voltage: 12V ; Flows: 30gph Fit Hose Size: 5/16" ; Inlet and Outlet diameter: 8mm . 4. Application: Universal . Pump is self priming and designed for Import Carburetor equipped Cars and Trucks and also Replacement Performance Carburetors . 5. Every single pump is 100 percent tested throughout the entire manufacturing process for worry free, out-of-the-box performance. .