✅ouyanglong exhaust clamp joins 3.5" OD pipe to 3.5" ID pipe. ✅Exhaust clamp perfect for mufflers, pipes, catalytic converters, headers manifolds etc. ✅3 1/2'' exhaust clamp are made from high quality 304 Stainless Steel, zinc-plated M10 bolt and nut, steel gasket, aluminum alloy I-block. Durable & Anti-rust. ✅I-Block design of the exhaust band clamp distributes 360 forces evenly, providing a seal and preventing material deformation. ✅Lap joint clamp have a no-weld design, easy to install or remove. 3.5 Inch Exhaust Clamp, 3 1/2'' Lap Joint Band Clamp for Pipes Catalytic Converters, Mufflers Clamp Stainless Steel 2PCS