Accessory castings

Founded in 1947 by John P. Walsh, Tri-Bro Tool Company(now know as Tri-Bro Mfg. Company) began as a tool room. Over the years the company has changed and expanded; since 1980 it has been in its present 24,000 sq. ft. facility on 2-1/2 acres, operated by the second generation.

Most of the items shown in this catalog are produced in brass. As you will see from the catalog, we have a large variety of bracelets, earrings and rings. One of our specialties is the manufacture of seamless rings and bangles in a wide variety of tailored and diamond cut styles.

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Take your concept drawings and reference materials to these factories. They will assist in refining your concept and thinking through the components involved in the Making Process.


Pattern makers will make a blueprint of your idea. They make sure your design will be well-constructed.


Material suppliers will provide you with the raw materials and components of your end product.


Sample makers will assemble the first end product prototypes.


Tooling factories produce custom tools that accelerate the production time of the end product.


These factories will mass produce your designs.