The Proto J5460 1/2" Drive Socket Extension is the perfect tool for your next project. It is designed to help you get into tight spaces and provides a solid grip on fasteners. With a 4-point, the SAE extension offers more contact points than other extensions on the market. The chrome finish protects against rust and corrosion while its heat treated design makes it durable and sturdy. This 1/2" drive size locking extension has an overall length of 2 1/2 in., with a female square drive and male square output. The Proto J5460 Socket Extension will be just what you need when working on your next job site.