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String X Tool Picture_edited


String X is a patent pending, one-of-a-kind, revolutionary tool to help you with your concrete finishing projects. String X is the only patented tool in the world that allows cement finishers to be able to fasten a string
line on the end of an extension pole so they may snap lines in wet cement to allow them to cut straight
tool joints - quickly and accurately.  
Take your work to the next level with String X!


I am Mike Bowbeer, the proud inventor of String X, and it is with great enthusiasm that I share the genesis of this innovation. My journey as a cement finisher laid the foundation for this transformative invention. One pivotal day, as I observed a fellow worker fastening a string line to the end of an extension pole, a moment of revelation washed over me.

The method they employed, using a string line suspended precariously over wet cement with a fellow worker on the opposite end to create a straight guide for their tools, struck me as rudimentary and far from ideal. This experience stirred my passion for improvement and spurred me to devise a solution that would not only expedite the process but also safeguard the integrity of the pole in the challenging, wet cement environment.

String X is the embodiment of this dedication to refinement. It is not just a technological advancement; it is a symbol of my unrelenting commitment to excellence. Beyond its remarkable efficiency and ease of use, String X offers a level of precision that empowers users to position the string exactly where it is needed. This invention stands as a testament to my unwavering pursuit of perfection in the realm of construction, representing a fusion of passion, professionalism, and innovation.

- Mike Bowbeer

Muller Construction Supply (San Jose, CA)
Build-Tek (Martinez, CA)
Stoneyard Masonry (Baypoint and Suisun, CA)
Larms Building and Garden Supply (Oakland, CA)

Diamond K Supply (Lafayette, CA)
Peninsula Building Materials (Redwood City and Santa Clara, CA)
Deco-Crete Supply (Orrville, Ohio)



String line reel not for sale, for demonstration only.  The diameter of the tool fits a 1 3/8 inch pole. You will need an adapter if you have a 1 3/4 inch pole. For now, adapters can be purchased online from a tool distributor.  Any questions, please do not hesitate to reach out to us at the contact info below.  Thank you for your support!

To order product, please visit our partner at:

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