The Proto 1” Drive 2 11/16 Impact Socket is a high-quality hand tool made by the trusted brand Proto. This socket is specifically designed for impact use, providing durability and reliability for automotive maintenance and repair. With a 1” drive size and the ability to fit 2 11/16 inch nuts, this socket is a valuable addition to any toolbox. The Proto B637 socket is a must-have for professionals and DIY mechanics looking for a reliable and efficient tool for their projects.