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Cobra® WRENCH board straightener

Can be handled with one hand: right or left

redresseur de lame de terrasse
Time savings
redresseur de lame cobra wrench
Know everything
  • Adjustable to joist dimensions
  • Robust and resistant
  • Easy to use / Right-handed and left-handed use
  • Time savings
  • Light

The Cobra® WRENCH is an ergonomic and innovative deck board straightener that is unique on the market. It helps to very easily straighten your warped, "banana-shaped" deck boards. It can save you precious time when installing your decking.


Cast aluminium lever and head
Stainless steel lugs
Rubber handle
1.5 kg
Joist sections
Height of 28 to 150 mm
Delivered with two additional spare stainless steel lugs
1 handed: right-handed or left-handed

Use of Cobra® WRENCH

packaging du cobra wrench

Straighten deck boards easily and effortlessly

The dimension of lugs and their adjustable positioning can be adapted perfectly to all joist sections and heights. The installation of a twisted or warped board becomes a simple affair!

No fastening needed, two lugs at the end of the lever are wedged over the width of the joist. Thanks to its lever system, the force exerted is multiplied, making it even simpler to use.

A light, practical tool for time savings

Made of aluminium, the deck board straightener is an especially light tool. It can be handled with one hand. Flexible and reversible, it can be used by right-handed people as well as left-handed people, making it functional in all situations.

Precious time savings for the installation of your deck. Professional results are accessible to everyone.

Right hand - Left hand

The Cobra® WRENCH is for both right-handed , and left-handed use. It straightens boards against walls with your choice of tightening direction. 

Adapted to all joist sections

The Cobra® WRENCH board straightener is provided with two stainless steel lugs, which can be adapted to all joist height configurations. Lugs may be positioned in several places on the tool head for better support on the joist.

The straightener then pushes the deformed deck board, and blocks it in the straight position, leaving both of your hands free to easily fasten it with screws or clips.

A simple gesture, in just a few seconds, and your board is straightened.

Two stainless steel lug sizes are delivered with the deck board straightener to adapt to all joist sections, 28 to 150 mm in height.

Technical documents


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