3/8in Dr. 21mm Impact Socket

Genius Tools Impact Socket 21mm 3/8 Inch Drive Heavy-Duty Chrome Molybdenum Steel - 313021 Impact Socket This 21mm, 6-point impact socket is built for consistent fit and controlled torque transfer on compatible fasteners. The 3/8 inch drive size and compact 32mm (1.26 inch) overall length help it work in tighter spaces while staying easy to handle in everyday service. Constructed from a Chromium-vanadium steel alloy, it is designed for high strength, durability, and anti-corrosive performance. For long-term reliability, the socket is heat treated through oil quenching and finished with a matte black oxide coating to support a tough exterior and strong inner core. Key Benefits 21mm 6-point profile helps reduce fastener rounding under load. 3/8 inch drive size fits common impact-ready ratchets and tools. 32mm overall length supports access in compact or crowded work areas. Chromium-vanadium steel alloy provides high strength and anti-corrosive durability. Heat treated through oil quenching for tougher exterior and stronger core. Matte black oxide coating helps resist wear and finish damage over time. Size markings are stamped for quick, permanent identification during tool organization. Built to meet or exceed ANSI standards, this socket is intended for professional technicians who need dependable performance over heavy use. SKU: 313021.