This 91-piece impact socket set is built for automotive and mechanical repair with both SAE and metric deep and shallow sockets. It is made from heat-treated CR-V alloy steel for strength under high-impact torque and features a black phosphate finish for added resistance to water, oil, and rust. The 6-point socket design helps improve grip on fasteners while reducing corner wear. Laser and stamped size markings make identification easier in low-light working conditions. A carrying case is included to keep the set organized and portable.