Color: 5/16" OD - 16FT. 【Used in Many Systems】 Auminum tubing has a wide range of applications in the automotive industry due to its light weight and strong operability. From the tank to the pump of the fuel system, the transmission cooler line of the transmission system, the coolant line of the cooling system, the brake fluid line of the hydraulic braking system, aluminum tubing can give full play to its role.