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Gray Tools 57 mm 12-point 45-degree offset striking face box wrench, black oxide finish

Gray Tools

Gray Tools 66957 57 mm 12 Point 45° Offset Striking Face Box Wrench

SKU CH-XSB2-N6JCE

A 57 mm, 12 point striking face box wrench with a 45° offset head and large striking block for high-torque applications, forged from premium tool steel with a corrosion-resistant black oxide finish

  • 57 mm 12-point opening fits large fasteners securely
  • 45° offset head clears obstructions in tight spaces
  • Large striking block delivers maximum impact safety and contact
  • Black oxide finish resists corrosion for long service life
  • Forged premium tool steel meets ANSI standards for durability

57 mm 12-Point Striking Wrench

The Gray Tools 66957 is a 57 mm striking face box wrench built for heavy-duty fastening tasks. Its 12-point, 45-degree offset head provides secure engagement on large hex fasteners where clearance is limited. Forged from premium tool steel, it is designed for industrial maintenance and construction applications. The striking block allows hammer impact to break free seized or corroded bolts.

Black Oxide Finish Durability

A corrosion-resistant black oxide coating protects the tool surface during normal use in harsh environments. Precision broaching ensures a tight, secure fit on the fastener, reducing the risk of rounding under high torque. The robust striking block maximises surface contact for safe, effective force transfer. The forged steel construction withstands repeated heavy impacts without deformation.

ANSI Standard Compliance

The wrench meets ANSI standards for dimensional accuracy and performance, confirming its suitability for professional trade use. The offset head design improves access around obstructions without requiring additional adapters. California Proposition 65 warnings apply regarding chemical exposure during handling. No additional accessories or software are included with this single hand tool.

Highlights

  • 57 mm 12-point opening fits large fasteners securely
  • 45° offset head clears obstructions in tight spaces
  • Large striking block delivers maximum impact safety and contact
  • Black oxide finish resists corrosion for long service life
  • Forged premium tool steel meets ANSI standards for durability

Specifications

BrandGRAY TOOLS

Questions about this item

How do I fit the 12 point 57 mm box end onto the fastener with the 45 degree offset head?

Place the 12 point opening over the 57 mm fastener, angle the 45 degree offset head for clearance, then strike the large striking block squarely with a hammer to apply torque without rounding the corners.

What maintenance will the black oxide finish and striking block need over time?

Wipe the black oxide finish clean after each use and apply a light oil film to prevent corrosion; inspect the striking block for mushrooming or cracks before every session and replace the wrench if the block shows deformation.

At what point does the forged tool steel or ANSI rated construction reach its limit during sustained heavy striking?

The forged premium tool steel and ANSI rated design handle repeated impact, but the practical limit appears when the striking block mushrooms or the 12 point broach wears enough to slip on the 57 mm fastener.

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