YJ RACING 2" to 2 1/2" Black Color Professional Straight Reducer Silicone Turbo Hose Coupler Intercooler 51mm to 63mm 100% Brand New. Never been used.Made of high quality silicone material Working Temperature:-76 F (-60 C ) to +500 F (+260 C) Working Pressure:0.3Mpa (43.5 PSI) to 0.9Mpa (130.5 PSI) Thickness: 5mm. 3ply polyster reinforced Hose Inside Diameter: 2"&lt;2 1/2"