The Proto Professional J52138 3/8 In. Drive Fractional Socket Set is a high-quality set of standard sockets designed for automotive use. Made by the reputable brand Proto, this set includes a variety of sockets with a chrome surface finish for durability. The set features SAE measurement system and comes with a 3/8 inch drive size, making it a versatile and essential tool for any mechanic or automotive professional. Ideal for troubleshooting and maintenance tasks, this socket set is a valuable addition to any workshop.