Universal 3 ID 304 STAINLESS EXHAUST FLEX BELLOWS 4 LONG For 3 Pipe ,ULTRA STRONG FE903010Universal 3" ID 304 stainless steel bellow flex pipe with a 4" length, as shown in the photos. Inlet: 3" ID Outlet: 3" ID Material: 304 stainless steel End to end length: 4" The double deck design, with a Reinforced wall, ULTRA STRONG Inside Diameter 3. 00'' 76mm Overall Lenght 4. 00'' 101mm Universal, Fully 304 Stainless Steel,for better welding RIDER SHOX provides the warranty for the 24 months period Inner Smooth Pipe, Compact shape, Robust Design