LockJaw, LLC is an innovative tool company dedicated to developing better tools for the home, workplace and job-site. The LockJaw™ Self-Adjusting Plier family of tools help accomplish tool tasks with more efficiency, in less time and with greater results.


For consumer information please visit our "where to buy" area for the dealer nearest you. For questions about the LockJaw™ family of tools, contact LockJaw, LLC through the "contact" section of our web site.

Company History

For over 20 years, Daniel and Robert Poole have designed, developed and patented many successful hardware and industrial products. The patents were sold to, and marketed by, several prominent companies under many top brand names, including 3M, Stanley, American Tool, DAP and Ramco.

The development and patenting of the Self-Adjusting Locking Pliers and C-clamps etc. was a marked change from the standard locking pliers that have not significantly changed for almost 83 years. These unique self-adjusting pliers prompted the formation of the Poole’s own Company, Lockjaw LLC.

Lockjaw’s headquarters, sales, marketing and distribution center is located in Chicago, Illinois while Lockjaw’s team of inventors, designers and engineers continue new product development in the original facility located in Scottsdale, Arizona. With all the pieces in place, Lockjaw’s goal is to provide unique tools for the professional and do-it-yourselfer. We are a product driven company that supplies many markets, including hardware, automotive, industrial and construction.

Lockjaw has recently introduced its new Auto-Grip self-adjusting groove pliers and will continue to develop new and unique tools, designed with the user in mind. Please visit our product page for more information.


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LockJaw, LLC 1151 Atlantic Drive, Unit 2 West
Chicago, IL 60185 USA
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