ID 2 Inch to OD 2.5 Inch (2" ID to 2 1/2" OD) Exhaust adapter. Reducer length 3.6 inch, thickness 0.054". The exhaust coupler is made of T201 S/S Nonmagnetic Stainless Steel, the surface is polished and the edge is cut by machine. Anti-corrosion and durable, ideal for all exhaust/turbo/ intercooler/intake piping connection. 3.6 inch Length flare is one piece construction without welding, manufactured with precision bends and OE-style routings,heavy duty 16-Gauge stainless steel exhaust connector coupler for longer life The exhaust reducer is made of T201 S/S Nonmagnetic Stainless Steel, with a polished surface that's shiny and nice. Anti-corrosion and durable, this exhaust coupler is ideal for all piping connections. 📌The 3.6-inch length flare pipe features one-piece construction without welding, crafted with precision bends and OE-style routings. This heavy-duty 16-Gauge stainless steel exhaust coupler is built for longer life. If you receive a wrong size product, please take a photo of the label and contact us to get a new replacement without return. Please DO NOT make a return, as it may cause a second mistake in Amazon warehouses. Thanks!