Was $2.00 NOW $1.25 pair. Two 4 Ft lengths of Litz wire, one red, one black. Tough woven outer covering, these were originally for test leads. Litz wire consists of a number individually insulated magnet wires twisted or braided into a uniform pattern with the primary benefit of reducing AC losses in high frequency windings. Because the copper conductors are so small, the wire requires some patience to solder or connect.