The CRAFTSMAN Shallow Socket Metric 1/2" Drive 21mm 12 Point cmmt44249 is a high-quality hand tool designed for automotive use. With a lifetime warranty, this single item socket features a chrome finish and is manufactured by Craftsman. Made in Taiwan, this socket is part of a system of measurement based on the metric scale, specifically catering to 21mm sizes. Featuring a 12-point drive type, this standard socket is a reliable and durable addition to any toolbox.