Usage Tips:Exquisite Material: These thread reducers are made of high-quality stainless steel material, stable structure, excellent performance, corrosion and rust resistance, high strength, can maintain high performance even in harsh environments, durable and can be used for a long time. Thread Rpair Tool Dimensions: The internal thread of the threaded insert is M6x1.0mm, the external thread is M8x1.25mm, with a small groove. If you have a threading error or want to repair a damaged internally threaded hole, our threaded inserts can be used to repair them and are an effective tool for repairing wires. Easy to Operate: These thread inserts male female reducing nut repair tool has a smooth surface without burrs, deep and clear threads, and even force. The bottom of the thread repair insert is designed with a small groove, which makes it easier to screw it into the wood when installing. Wide Range of Applications: Threaded reducers that can be used to connect female and male pipes of different diameters. Widely used in manufacturing and production fields such as aviation, automobiles, steam turbines, electronic communications, molds, computers, lamps, mechanical equipment, radiators, etc. Package Includes: You will receive 20 pcs threaded adapters, and 1 x storage box. Sufficient quantity can easily meet your daily use and replacement needs. All threads adapters are packed in a storage box, which is easy to use, find, and carry.