This Proto 3 1/4″ SAE socket with a 1 1/2″ drive is a must-have for any mechanic or DIY enthusiast. Made with a matte surface finish, this single item socket set includes an impact socket type and 6-point drive type. The socket is manufactured by Proto and has a manufacturer part number of 15052. The unit type is a unit, and the system of measurement is SAE. The socket is suitable for use with a variety of tools, including sockets. It is a high-quality socket that is built to last. With free shipping in the USA, this socket set is a great addition to your automotive tool collection.