●[Size] 2.5" ID to 3" OD exhaust reducer joints 2.5" OD pipe to 3.0" ID pipe; Lenght : 3.95 inch. Please measure before purchasing. ●[Material] Made of 304 stainless steel. ●[Application] Universal fit for all exhaust, turbo, intercooler, intake piping connection. ●[Installation] Professional welding installation is highly recommended. ●[Warranty] EVIL ENERGY provides 3-month warranty for exhaust adapter . Any problem you have, please contact us via Amazon massage.