Crimps are produced in three cavities: RED 22-16 AWG, BLUE 16-14 AWG & Yellow 12-10 AWG. Rostra Tool Company, the manufacturer of SARGENT brand tools, is a US-based company that specializes in designing rugged hand tools for electrical and plumbing trade professional use. We are proud of our heritage and reputation as a quality tool supplier. We specialize in constantly improving designs and introducing new, innovative hand tools based on our customers and engineers extensive trade knowledge. As plumbing, electrical and manufacturing systems and technologies change, so do SARGENT Tools.