Spectre's tubing, couplers, and other air intake components allow you to design your very own custom cold air intake systems. Offered in various shapes and sizes, these components can be used to fabricate an intake system for almost any application. This tube is designed for intake systems requiring tubing with a 4 inch outside diameter, and features a 60 degree welded bend and a 7 inch leg. Manufactured using high quality materials including 6063 grade polished aluminum, this product is engineered for optimum fit and function. Spectre s air intake components allow you to design your very own custom cold air intake systems. This tube is designed for systems requiring tubing with a 4 inch outside diameter; and features a 60 degree welded bend and a 7 inch leg.