BURNDY engineers our Connectors, Tools, and Dies to all work together as part of the BURNDY Engineered System. This includes design, testing, and manufacturing of the Connectors, Tools, and Dies which allows us to warranty these connections and meet the requirements of standards such as UL, CSA, IEEE, ANSI, and others. Other companies may manufacture crimp tools certified for use with listed connectors, but we do not recommend this as we do not typically qualify other manufacturers’ tools with our connectors.