3" - 3.125" Silicone Reducer Coupler Hose 3-Ply Reinforced Black Inlet Size: 3" Inch (76mm), Outlet Size: 3 1/8" inch (80mm) Material: 3-Ply Reinforced Silicone. Color: Black Withstands temperatures up to 500F Thickness: 4.0mm Length: 3" (76mm)