The patented Lok-CondÔ wrenches were developed by Premier Tool Works in Burr Ridge, Illinois. The owner, calling upon his extensive background in machine automation and innovative solutions, invented the Lok-CondÔ conduit lock nut wrench. The family of conduit lock nut wrenches and sockets were developed to facilitate the assembly of electrical systems in the machines and products we build. The family of products has been expanded and is now being offered for sale to the general public and distributors via the web. Premier Tool Works has been in business for over 90 years and is a brick and mortar facility, not a virtual company. All our products are manufactured by us, here in the USA to the highest quality standards. We welcome you to visit our parent site Premier Tool Works, for more information about us and the diverse range of products we manufacture.