Features PROFESSIONAL AND UNIVERSAL --- This is a professional universal reamer cylinder spark plug thread repair tool, and which is a comprehensive kit FOR ENGINES AND GENERATORS --- Can make your maintenance work easier, effective and convenient, especially suitable for gasoline engines, generators, diesel engines and other machines QUICKLY AND EFFECTIVELY REPAIR --- 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 USEFUL AND CONVENIENT --- Universal size is suitable for repairing spark plug thread M10x1.0, very useful and convenient GOOD QUALITY STAINLESS STEEL MATERIAL --- Good quality stainless steel material and galvanizing process ensure that the products you buy are durable Specification:Item Type: Spark Plug Thread Repair Tool Threaded Pipe Size: M10x1.0 (thread diameter x pitch) Threaded Pipe Length: Approx. 17.5mm / 0.69in, 12.5mm / 0.49in(Each 5pcs)Threaded Pipe Material: Stainless steel Tap Size: M12x1.0 (thread diameter x pitch) Tap Material: High speed steel Package List:1 x M12x1.0 Tap10 x M10x1.0 Threaded Pipe Package List 1 x M12x1.0 Tap 10 x M10x1.0 Threaded Pipe