Item Type: Thread Inserts_x000D_Material: 303 Stainless steel_x000D_Specification: Female thread M2x0.4mm, male thread M4x0.7mm, approx. 4mm / 0.2in long_x000D_Whether to Slot: There is a small slot_x000D_Purpose: Thread repair_x000D_Case: 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, because the material of this reducer is stainless steel, it will make the M8 thread more firm 1This effective thread repair tool is simple to install, including 10pcs threaded inserts 2Threaded insert can be used as a repair method, therefore repairing the threaded hole in a cost?effective manner if a thread error occurs or a damaged female threaded hole is repaired 3Made of good?quality 303 stainless steel material to ensure the durability and stability of the product 4Widely used for aviation, automobiles, steam turbines, electronic communications, computers, lamps, molds, mechanical equipment and radiators 5External thread pitch 0.7mm, internal thread pitch 0.4mm, come with a small groove for more convenient use10 x Thread Inserts