The Stud-wrench / spanner or Stud-opener has been designed after carrying out systematic observation based research in the automotive and engineering industry. The design team has done thorough analysis of this research and evolved a design guideline by following proper design process. The outcome of this design process is a flawless, robust, self adjusting Stud-wrench to operate upon any size of round bar or stud which is capable of giving unmatched functional performance.

The set of 3 components assembled together permanently, ensures minimum maintenance and life time trouble free service. The overall form of this wrench has been inspired from circular shape of the round bar or a stud. The Circular-gripper which grips the stud has an eccentric negative circle (with vertical fine serrations) inscribed within a bigger positive circle giving it a distinct and unmistakable visual appeal and the performance.
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