Sealey Reverse Action Spark Plug Thread Chaser

The Sealey Reverse Action Spark Plug Thread Chaser M12 (Model No. MS002) is specifically designed for repairing M12 threaded spark plug holes commonly found in many modern petrol engines. This thread size is widely used across various manufacturers, making this an essential tool for professional workshops and serious DIY mechanics. The M12 variant features the innovative reverse action mechanism that allows the tool to pass through the damaged plug thread into the combustion chamber, then expand to engage with the inner, undamaged threads. This approach ensures proper align