The high temperature injection molded silicone elbow coupler is designed to connect to a 3-7/8OD tube and is 2-1/2 long. Standard stainless steel worm-gear #060 clamps provides tight connections, durability, and is corrosion resistant for industrial, commercial, truck, off-road, and racing applications. Product Features:Injection Molded SiliconeCoupler Hose Allows For Expansion/Movement/VibrationStainless Steel Worm-Gear Clamps Provides Tight ConnectionsWorm-Gear Clamps Provide Durability/Corrosion Resistant