This 1 Drive Impact Extension made by Wright Tools is a must-have for any mechanic or DIY enthusiast. The extension is 7 long and is made in the United States with a durable black oxide surface finish. It is compatible with standard sockets and has a versatile system of measurement, including SAE and Metric. It is non-domestic and has not been modified. This tool is perfect for automotive use and is a great addition to any socket set.