The Tri-State Tooling & Manufacturing Association (TTMA) was founded in 1947 and currently serves the precision custom machining industry in Southwestern Ohio, Northern Kentucky, and Southeastern Indiana. TTMA members are privately owned and operated businesses that are part of an industry generating annual sales in excess of $40 billion. TTMA members design and manufacture special tools, dies, molds, gigs, fixtures, gauges, special machines, and precision machined parts for a large variety of industries.

The TTMA also enjoys the participation of its associate members consisting of companies that support the metal working industry with products and/or services.

The TTMA mission is to be the best metalworking trade association with comprehensive information resources for its members and interfacing with community partners.