Genius Tools Impact Socket 21mm 3/8 Inch Drive CR-Mo Steel Durable Heavy-Duty - 343221

Genius Tools Impact Socket 21mm 3/8 Inch Drive CR-Mo Steel Durable Heavy-Duty - 343221 Impact Socket

SKU: 343221. This 3/8" drive 21mm impact socket is designed for professional technicians who need consistent fit, dependable strength, and long service life in heavy-use environments.

Built from Chromium Molybdenum Alloy Steel, it combines high strength with anti-corrosive properties. A heat-treated construction and matte black oxide coating support durability, while permanently stamped size markings improve tool organization and speed on the job.

Key Benefits

• 3/8" drive, 21mm impact socket built for high-torque impact applications.
• Overall length 32mm (1.26 inches) for controlled access in tight areas.
• Chromium Molybdenum Alloy Steel delivers strength, durability, and anti-corrosive performance.
• Heat treated through oil quenching for tough exterior and strong inner core.
• Matte black oxide coating helps protect the socket during daily shop use.
• Stamped size markings provide permanent, fast identification for better tool organization.
• Meets or exceeds ANSI standards and includes a limited lifetime warranty.

The Genius Tools Impact Socket 21mm 3/8 Inch Drive CR-Mo Steel Durable Heavy-Duty - 343221 is engineered to hold up to repeated impact use with a balance of exterior toughness and core strength. With clear, permanent size ID and ANSI-backed quality expectations, it’s a reliable, professional-grade choice for long-term service.