Performance Tool Cleans threads in oxygen sensor holes Use with 3/4" hex socket or 3/8" square drive Size M18 x 1.5 Also works on M18 x 1.5 spark plug threads THOROUGH CLEANING The Performance Tool W84006 Oxygen Sensor Thread Chaser effectively cleans threads in oxygen sensor holes, ensuring a proper fit and reliable performance. EASY TO USE This tool can be used with either a 34Inch hex socket or 38Inch square drive, making it easy to incorporate into your existing tool set. UNIVERSAL SIZE With a size of M18 x 1.5, this oxygen sensor thread chaser is compatible with a wide range of vehicle makes and models. VERSATILE APPLICATION Not just for oxygen sensors, this tool also works on M18 x 1.5 spark plug threads, making it a versatile addition to any mechanics toolkit. SAFE AND EFFECTIVE The W84006 is not intended for use with an impact driver and should not be used as a tap. Follow the manufacturers instructions for safe and effective use.