5" to 3" ID Gloss Black - One Short LegThis 90 degree silicone elbow is 5" ID on one end and 3" ID on the other and can be used anyplace you need a reducing 90 degree bend. Handles 350F continuous and is perfect for intercooler aftercooler and turbocharger applications. Five ply reinforced silicone for high strength much stronger than 4 ply elbows. 7 32 wall thickness. This is the special short radius version with one short leg, for locations where you have minimum space to install.