Gray Tools
Gray Tools MC70B 70mm 12 Point Black Oxide Wrench
A 70 mm combination wrench with a 12-point drive and corrosion-resistant black oxide finish
- 70 mm opening fits large fasteners
- 12-point broaching gives secure grip on bolt heads
- Black oxide coating resists corrosion during use
- Meets ANSI standards for dimensional accuracy
- California Proposition 65 warning applies to this product
70 mm 12-point combination wrench
The Gray Tools MC70B is a 70 mm combination wrench with a 12-point box end broached for a secure fit on fastener flats. Its black oxide finish resists corrosion in shop environments. The tool meets ANSI dimensional standards for professional use.
Thermal and power behaviour
As a hand tool the wrench generates no heat and draws no power during normal use. There are no moving parts that create noise, so operation is silent. No electrical supply or cooling is required.
Finish and compliance notes
The black oxide coating provides surface protection against rust without adding a bulky plating layer. A California Proposition 65 warning applies because the product contains a chemical listed for cancer and reproductive harm. No software or additional accessories are bundled.
Highlights
- 70 mm opening fits large fasteners
- 12-point broaching gives secure grip on bolt heads
- Black oxide coating resists corrosion during use
- Meets ANSI standards for dimensional accuracy
- California Proposition 65 warning applies to this product
Specifications
| Brand | GRAY TOOLS |
|---|
Questions about this item
How do I install the 70mm 12-point combination wrench on a fastener without rounding the corners?
Seat the 12-point box end fully on the fastener before applying force; the precision broaching grips the flats when the wrench is square, but tilting it concentrates load on the points and rounds them.
What maintenance will the black oxide finish need over time?
Wipe the wrench dry after each use and apply a light oil film; the black oxide resists corrosion but is not a permanent coating and will wear where the jaws contact fasteners.
At what point does the 70mm wrench reach its practical torque limit during sustained use?
The 12-point geometry and 70mm jaw width set the limit; once the fastener requires more leverage than the handle length provides, the box end can slip or the flats deform.
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