Introducing the new Mayhew Spark Plug Thread Chaser. Designed to clean and restore damaged spark plug holes, either 18 x 1.50mm or 14 x 1.25mm. By placing the spark plug thread chaser into the impacted area and using a 3/16” ratchet or deep socket, users can effectively engage with the threads to clean and restore them. This tool also features a rubber O-ring, preventing unnecessary slippage and ensuring correct alignment while in use. A black nitride finish helps prevent rust and provides corrosion and abrasion resistance. Made in the USA and backed by a Lifetime Warranty.