1/2in Dr. 21mm Deep Impact Socket

Genius Tools Deep Impact Socket 21mm 1/2 Inch Drive Heavy-Duty Chrome Molybdenum Steel - 417821 Deep Impact Socket Built for repeated impact use, this 21mm deep impact socket combines a 6-point profile with a 1/2in drive to help transfer torque efficiently on demanding fasteners. The 78mm (3.07in) deep length improves access to recessed hardware where standard sockets may fall short. Designed for professional technicians, it is engineered for long service life with heat treatment through oil quenching and a matte black oxide coating. Permanent size stamping supports fast identification in busy toolboxes and carts. Key Benefits 21mm 6-point impact design helps reduce fastener rounding under load. 1/2in drive size fits common impact wrenches and ratchets. Deep 78mm (3.07in) profile reaches recessed and deep-seated fasteners. Heat treated through oil quenching for tough exterior and strong core. Matte black oxide coating supports durability in frequent, heavy-duty use. Sizes are stamped for permanent, quick identification during tool organization. Manufactured for professional-grade performance, this socket focuses on secure engagement, consistent torque transfer, and durability in high-use environments. Its corrosion-resistant steel alloy construction and clear markings make it practical for daily service work, while the deep length supports better access to challenging fastener locations.