BIG KAISER Precision Tooling Inc., based in Hoffman Estates, IL., was originally established as KPT/Kaiser Precision Tooling, Inc. the U.S. subsidiary of Heinz Kaiser AG, Rümlang, Switzerland (recently renamed BIG KAISER Präzisionswerkzeuge AG) in the spring of 1990. BIG KAISER Präzisionswerkzeuge AG, is a worldwide leader in the development and manufacture of precision boring tools and modular boring systems of unmatched quality. BIG KAISER's most distinctive features are the unsurpassed ruggedness of the rough boring heads, high repeatable precision of the finish boring heads and the patented design of the CK/CKB connection. BIG KAISER celebrated its 65th anniversary in 2013 and its subsidiaries serve manufacturing communities in the global market of more than 30 countries. BIG KAISER quality and precision are second to none.

In June of 2003, with a significant expansion of its commitment to the North American market, BIG Daishowa Seiki Co. Ltd., a global tooling manufacturer based in Osaka, Japan, formed a new strategic alliance with KPT/Kaiser Precision Tooling, Inc. BIG Daishowa Seiki is one of the world’s leading producers of precision tool holders and measuring accessories. It operates six manufacturing facilities in Japan; one in Osaka and five in Awaji. The company was established in 1967 and now employs more than 500. To recognize the importance of this new strategic alliance, KPT/Kaiser was renamed BIG KAISER Precision Tooling Inc.

BIG KAISER and BIG Daishowa Seiki look back on over thirty five years of successful collaboration as licensor and licensee. This relationship has been characterized by mutual trust and has been to the benefit of both companies. Our experience is that customers ask for total tooling solutions, for that reason, the global market urgently requires more and more cooperation to be able to fulfill the respective customer needs. BIG Daishowa’s late and former President and CEO T. Komine said: "We welcome this opportunity to partner with KPT to expand our business and to offer our new products not presently sold in North America".

BIG KAISER professionals compliment the world's finest tools with world class service and sales support. BIG KAISER's 33,000 square foot suburban Chicago headquarters stocks over 400 modular tool components, most of them available for overnight delivery anywhere in the United States. The H.Q. also houses BIG KAISER's United States product demonstration and training center. Damaged tools go to BIG KAISER's full service repair shop for speedy renovation, replacements are available overnight if needed. BIG KAISER's trained and experienced field application team is ready to assist with any manufacturing problem that may arise.

Also included in the mix are precision tool measurement and presetting systems, including the Diaset and Speroni lines. The entry level Diaset contact digital tool measuring and presetting stations are perfect for basic presetting and measuring needs. The more technologically advanced Speroni systems, with non-contact measurement and presetting capabilities utilizing projectors and vision systems are designed for DNC and CIM applications. Speroni tool room management systems are designed to reduce tool management time by putting the right tool in the right place at the right time.

Additional BIG KAISER products include: Unilock precision universal zero-point workholding equipment, Tool Pro tool assembly and maintenance devices, a full line of BIG KAISER inserts, Sphinx precision solid carbide & high speed steel drills and micro drills, mptec articulated stands and Tekusa spindle cleaners.