Crimp heads and die sets are components of modular tooling systems, most typically used for the assembly of crimp-on interconnect products to wire or cable materials. They are the component of such systems that mechanically interfaces with a workpiece, and by being modular or interchangeable, allow the use of a common mechanism for generating force or motion to be used for applying a range of interconnect products, as well as lowering replacement costs should damage or wear occur.