Check the listing for details. 4 to 5" OD Mandrel Exhaust Bend Elbow Concentric Reducer Pipe Adapter. Color: Silver Tone, Condition: New. Listed at 23.93 USD. Features:Seamless fit, durable construction, ensures optimal exhaust flow efficiency. good for custom exhaust systems.Material:Durable heat resistant T304 Stainless Steel material. Durable: Not easily damaged, No rust, anti-oxidation, Mirror polishingSpecification:Product Name: Mandrel Exhaust Bend Elbow Concentric ReducerTube Design: CuttedMaterial: T304 Stainless SteelColor: Silver ToneTube Angle: StraightInput Outside Diameter: 4inch/102mmOutput Outside Diameter: 5inch/127mmOverall Length: 4inch/100mmEasy to install:Clean the Exhaust Pipe AdapterFit the connecting pipe and exhaust pipe togetherYou may require tools like a wrench for removal and installation if neededPlease Note:Professional installation is highly recommended. Please check the detailed size before purchasing it.