Features 1. STANDARD THREAD: The sensor adapter thread specifications are M12 x 1.25 and M18 x 1.5, with standard size and resistant to slipping. 2. EXCELLENT MATERIAL: Made of high-quality iron material with electro-galvanized surface, offering high strength and durability. 3. WITH GASKET: Includes a gasket for added convenience when using threaded adapters, ensuring a secure and firm connection. 4. FINE TESTING: High-performance adapter accessories; all parts are tested and quality controlled before shipment. 5. FOR CAR REPAIR: Designed for use with oxygen sensors in automotive repair applications, providing strong practicality. Specification Item Type: Oxygen Sensor Adapter Material: Metal Inner Diameter: M12 x 1.25 Outer Diameter: M18 x 1.5 Package List 1 x Adapter 1 x Gasket