Usage Tips:Features: 1.Adjustable Range: The clamp on wideband sensor bung adapter has the adjustable range of 2?1/4 inch to 2?1/2 inch, suitable for vehicle's exhaust pipe, providing extremely accurate readings from gauge meters. 2.Stainless Steel: Made with premium stainless steel, ensuring durability, sturdiness and excellent rust resistant performance, perfect for long term stable use. 3.Improved Performance: Designed to accommodate oxygen sensors, improving air to fuel ratio, enhancing vehicle engine's efficiency and saving fuel. 4.Easy Installation: The air ratio gauge sensor bung adapter has a simple installation with the clamp on design, no drilling or welding needed, offering an effortless DIY experience. 5.Widely Used: The oxygen sensor bung adapter is suitable for various vehicle models, can be a practical tool to ensure optimal engine efficiency in different driving conditions. Specification: Item Type: Sensor Bung Clamp Adapter Material: 304 Stainless Steel Adjustable Range: 2-1/4 inch to 2-1/2 inch (5.7 to 6.35cm) Application: Universal for engine exhaust pipe of 2-1/4 inch to 2-1/2 inch size PackageList: 1 x Sensor Bung Clamp Adapter 1 x Gasket