Blue universal straight section 4 ply silicone hosing 76mm inside diameter specifications inside diameter 76mm outside dia 86mm length 250mm wall thickness 5mm colour blue material silicone we offer a range of high quality blue silicone hoses for anyone who want to construct thier own induction system or modify their original one the hoses are available in a wide range of diameters the hose will not be affected by the conditions in the engine bay