Triple E, LLC was founded in 1971 by Howard S. Eiler, John P. Eiler, and John E. Eiler, focusing on the requirements of customer service and quality. The company began with one automatic screw machine, a tool and die maker and 30 years of experience in the screw machine industry. From these meager beginnings Triple E has developed into a diversified business with skilled workforce working with state of art machinery and controlled by ISO 9001-2000 quality standards.

In December 2006 Triple E was purchased by Caster Concepts. The purchase included all assets including Parma Broach, Clamp-N-Jack and other associated product lines. This acquisition brought to Caster Concepts the capabilities of centerless grinding, ID/OD grinding, screw machining, high speed broaching and broach machine building to its diverse manufacturing capabilities.

Triple E services customers all over the world and is committed to being a world class supplier dealing with complicated machining challenges that requires a balance of skilled labor and modern technology. Combine these skills with the diversity of the Caster Concepts manufacturing and engineering skills and you have a most unique modern manufacturing organization.

Let the Caster Concepts family of businesses go ‘beyond standard’ for you while meeting your difficult high volume manufacturing needs or low volume specialty machining needs . Visit us online at