2.5" Universal Polished Aluminum Piping Kit 2 Elbow Hosess black hose 2.0mm Thickness Aluminum Pipe, Mandrel Bent, Polished. Each Pipe is 18" in Length,Outer Diameter is 2.5".Each pipe is bead, or rolled of each end(Except J Pipes). Top Quality Silicon Hoses,inside Diameter is 2.5". Matching Top Quality Stainless Steel 2.5" T-BOLT Clamps.