Item Type: Spark Plug Thread Repair Tool Threaded Pipe Size: M10x1.25 (thread diameter x pitch) Threaded Pipe Length: Approx. 17.5mm / 0.69in Threaded Pipe Material: Stainless steel Tap Size: M12x1.25 (thread diameter x pitch) Tap Shank Diameter: Approx. 7mm / 0.28in Tap Full Length: Approx. 88.7mm / 3.49in Tap Blade Length: Approx. 29.7mm / 1.17in Tap Material: High speed steel Package List 1 x M12x1.25 Tap 10 x M10x1.25 Threaded Pipe 1FULL SET OF TOOLS: This is a professional universal reamer cylinder spark plug thread repair tool, and which is a comprehensive kit 2EASY, EFFECTIVE AND CONVENIENT: Can make your maintenance work easier, effective and convenient, especially suitable for gasoline engines, generators, diesel engines and other machines 3PRACTICAL AND EFFICIENT: This is a very practical and efficient spark plug thread repair tool set, designed to help quickly and effectively repair damaged spark plug threads and prolong the service life 4USEFUL AND CONVENIENT: Universal size, suitable for repairing spark plug thread M10x1.25, very useful and convenient 5GOOD QUALITY STAINLESS STEEL: Good quality stainless steel material and galvanizing process ensure that the products you buy are durable