21mm 1/2" Drive Deep Impact Socket – 6-Point CR-MO Steel

Engineered for heavy‑duty torque, this 27mm deep impact socket for 1/2" drive is crafted from Chrome Molybdenum (CR‑MO) steel and heat‑treated for maximum strength and impact resistance. Designed to withstand repeated hammer blows without deformation, it’s a dependable tool for tough fasteners in demanding environments.

• Size: 27mm
• Drive size: 1/2" Square Drive
• Material: Chrome Molybdenum (CR‑MO) steel – heat‑treated for maximum strength and impact resistance
• Finish: Black phosphate coating for corrosion resistance
• Point design: 6‑Point for superior grip and reduced fastener rounding
• Type: Deep Socket – ideal for reaching recessed bolts and extended studs
• Compatibility: All standard 1/2" drive impact wrenches and ratchets
• Standards: Meets or exceeds ANSI/ASME standards

Why this socket stands out

The combination of CR‑MO steel and heat treatment delivers outstanding strength and impact resistance, enabling you to tackle stubborn fasteners without fear of deformation. The 6‑point design increases contact area with fasteners, reducing rounding risk on lug nuts and bolts in high‑torque situations. The deep profile provides clear access to recessed bolts and extended studs, saving time in cramped automotive bays or underframes. The black phosphate finish enhances corrosion resistance, extending tool life in harsh workshop environments. Fully compatible with standard 1/2" drive impact wrenches and ratchets, it integrates smoothly into professional toolsets.

Common use cases

• Automotive maintenance: remove and reinstall wheel lug nuts quickly and securely
• Suspension and chassis work: reach hard‑to‑access fasteners in tight engine bays or underframes
• Engine and drivetrain repairs: access recessed bolts and extended studs without adapters
• Heavy equipment maintenance: tackle high‑torque fasteners on construction and agricultural machinery