This MAC Tools ZP526R socket is a heavy-duty and high-quality tool that is perfect for any mechanic's toolbox. With a 6-point design and a 1-5/8in. size, it is ideal for working on larger bolts and nuts. The black oxide finish not only looks great, but it also provides corrosion resistance. This socket is designed for use with 3/4in. drive type and is made in the United States. It is a single item. The socket is specifically designed for impact use and will work great with any impact wrench. Whether you are a professional mechanic or a DIY enthusiast, this MAC Tools socket is sure to exceed your expectations.