The Proto 5122 3/8" Drive 11/16" Steel Full Polish Fractional Torque Adapter is a high-quality hand tool designed for automotive use. Made in the USA by the trusted brand Proto, this single item torque adapter features a 12 point drive type and SAE measurement system. With its durable construction and precise size of 11/16", this tool is essential for accurate torque applications in a variety of automotive and industrial settings.