Step 1
Place Hardwood Wrench™ on the joist.

Hardwood WrenchStep 2
Swing handle until board is straightened.

Hardwood WrenchStep 3
Locks in place for hands free holding.




Easy One Man Operation



Deck Board Straightening Tool

The brand new self-locking deck board straightening tool. This tool is used to hold deck boards straight while fasteners are being installed. It cam locks into place and applies much more bending power than other methods of straightening deck boards. Experienced deck builders recognize this deck tool as a long term solution for building decks.

Hardwood Wrench™ Product Benefits

  • Cam locks in place for true hands free “one man” operation.
  • Capable of bending multiple boards simultaneously.
  • High quality anodized aircraft grade aluminum with hardwood handle.
  • Adjusts to various sized joist thicknesses.
  • Easily reversible handle with NO EXTRA TOOLS NEEDED!
  • Works With ALL Decking Materials
cedar decking Cedar Decking
composite decking Composite Decking
cumaru decking Cumaru Decking
garapa decking Garapa Decking
ipe decking Ipe Decking
pressure treated decking Pressure Treated Decking (Pine)
redwood decking Redwood Decking
teak decking Teak Decking
tigerwood decking Tigerwood Decking

Expandible to accomodate double joists

Works with single or double joists up to 3.5" wide and all types of decking, including pregrooved or standard lumber, composites, and PVC.


Hardwood Wrench

The reversible handle accommodates multi-directional use for areas
with limited space.

Hardwood Wrench

In the Box:

  • 1 Hardwood Wrench
  • Knurled Joist Pins
  • 10 Configurations
  • Over 1,100 lbs. of Bending Force
  • Canvas Carrying Case

Patent Numbers: US 8,936,054; D623,913; EP 2,387,648; DE202010001036.5; UK 2,469,964; AU 2010210940; CA 2,749,643. Other U.S. and International patents pending. For more information visit