excess amounts of grease in prior art tendons which leaks out the ends of the tendons and through any breaks or pinholes in the jacket is substantially eliminated by the present invention the thixotropic corrosion inhibitor 18 should have grease like properties relative to its ability to be applied to the wrapped wires 14 and to stay put and adhere to the wires of the multi wire strand 11 the thixotropic corrosion inhibitor not only acts as a corrosion inhibitor for the wires of the multi wire strand 11 but also acts as a lubricant between the individual wires of the multi wire strand 11 and between the multi wire strand 11 and a loosely fitting seamless plastic jacket 22 the coated wires 14 are surrounded by a loosely fitting seamless plastic jacket 22 which provides an air space 24 between the plastic jacket 22 and the outer surfaces 16 of the coated wrapped wires 14 the inside diameter of the seamless plastic jacket 22 is greater than the diameter of the multi wire strand 11 such as to form a loosely fitting jacket the diameter of the multi wire strand 11 is the diameter of the circle that touches the outside surface of the wrapped wires 14 the seamless plastic jacket 22 should be sufficiently thick and tough such as not to be.