The Workman MIL-7-4 is a 4-pin replacement microphone cable designed for CB and Ham radio use. It features a coiled 6-conductor cable that extends from 30 inches unstretched to approximately 60–70 inches when stretched. The cable measures 0.25 inches in outer diameter with 0.5-inch diameter coils. It includes a 4-pin plug on one end and bare wiring on the other, allowing for easy installation or repair. The construction uses five stranded wires plus a shield, with an additional shield around the single white conductor. This cable serves as a direct replacement for Astatic microphones.