1/2in Dr. 21mm Cr-Mo Deep Impact Socket

Genius Tools Deep Impact Socket 21mm 1/2 Inch Drive Chrome Molybdenum Durable Heavy-Duty - 447821 Impact Socket This 21mm deep impact socket is built for demanding work where impact-rated strength, consistent fit, and long service life matter. The deep design helps reach recessed fasteners, while the 1/2in drive size suits common impact tools and professional ratchets. Made from Chromium Molybdenum Alloy Steel and finished with a matte black oxide coating, it's engineered to resist wear and corrosion in heavy-use environments. Clear, stamped size markings support faster tool selection and better organization on the job. Key Benefits 1/2in drive, 21mm deep impact socket for high-torque impact applications. 78mm overall length provides reach for recessed or hard-to-access fasteners. Chrome molybdenum alloy steel construction delivers high strength and durability. Oil-quenched heat treatment supports a tough exterior and strong inner core. Matte black oxide coating adds protection against wear and corrosion. Permanently stamped size markings enable quick identification and tool organization. Meets or exceeds ANSI standards for professional-grade performance expectations. The combination of deep reach, durable Cr-Mo construction, and protective finish supports dependable results over time.