The NAPA Professional Impact Socket Set includes 16 pieces ranging in size from 13/16 inch to 11/16 inch. These sockets are designed for impact use and are made with a 6-point drive type for added durability and strength. The set is specifically designed for SAE measurement systems and features a 1/2 inch drive size, making it compatible with a variety of automotive applications. Ideal for professionals and automotive enthusiasts alike, this high-quality socket set from NAPA is a must-have for any toolbox.