Feature:1. Effective thread repair tool for threaded holes, economical and efficient.2. Made of highquality 303 stainless steel, it is strong, corrosionresistant and durable.3. Can be used in aviation, automobiles, electronic communications, lamps, machinery and radiators, etc.4. Ergonomic design, timesaving and laborsaving, reduces the difficulty of work.5. Built to meet standard specification, strictly follow factory quality control.Specification:Item Type: Thread Insert Kit Material: 303 Stainless SteelSpecification:Female Thread: M5 x 0.8Male Thread: M8 x 1.25Length: Approx. 10mm/0.4inSlotting: YesPurpose: Thread RepairCase: For example, if the M8 thread is slippery, if you want to continue to use the M8 thread after the restoration, use this method to first expand the M8 thread to the M10 thread, and then use the M8-M10-12 length reducer to change it back to M8 , So because the material of this reducing diameter is stainless steel, it will make the M8 thread more firm.Package List:10 x Thread Inserts