EVIL ENERGY is our brand, we're a direct and professional manufaturer, one of greatest manufacturer and exporter in Tuning parts include intake system, exhaust system, engine system, cooling system, interior&exterior parts. The carb carburetor inlet fittings are easy to use and don't require special equipment. It is recommend a bit of assembly lube to help prevent any galling. Wildly used in oil gas line, braided fuel line, clutch hose, turbo line etc.