Usage Tips: features 1PROFESSIONAL AND UNIVERSAL: This is a professional universal reamer cylinder spark plug thread repair tool, and which is a comprehensive kit 2FOR ENGINES AND GENERATORS: Can make your maintenance work easier, effective and convenient, especially suitable for gasoline engines, generators, diesel engines and other machines 3QUICKLY 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 4USEFUL AND CONVENIENT: Universal size is suitable for repairing spark plug thread M10x1.0, very useful and convenient 5GOOD QUALITY STAINLESS STEEL MATERIAL: Good quality stainless steel material and galvanizing process ensure that the products you buy are durableSpecificationItem Type: Spark Plug Thread Repair ToolThreaded 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 steelTap Size: M12x1.0 (thread diameter x pitch)Tap Shank Diameter: Approx. 7mm / 0.28inTap Full Length: Approx. 88.7mm / 3.49inTap Blade Length: Approx. 29.7mm / 1.17inTap Material: High speed steel .wang-edit-text{ font-family:"Arial" important; } .wang-edit-text table { border-top: 1px solid 000; border-left: 1px solid 000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid 000; border-right: 1px solid 000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }Package List1 x M12x1.0 Tap10 x M10x1.0 Threaded Pipe