Before gaining control of TWA and RKO, before founding Hughes Aircraft, Howard Hughes inherited the patent rights on a tool. This tool was to become the very basis of his entire financial empire. The moral of the story is: The right tool can change your life. This medium duty crimp tool can be used for terminating a RJ45 plug with a stranded 4-pair unshielded twisted pair cable, making a patch cable assembly; it can also be used for terminating a RJ12 or RJ11 plug with a 3-pair or 2-pair unsheiled phone cable.