Abstract: A tool for diagnosing and repairing defective wires. The tool is configured as a pair of pliers, wherein the pliers have the ability to cut, strip and twist wire. The pliers also contain two different piercing probes. The first piercing probe extends away from the body of the pliers, thereby enabling the pliers to be used as a circuit testing probe. The second piercing probe is located at a specific point on the jaws of the pliers. When a wire is placed in the jaws of the pliers at that point, the wire becomes pierced by the second piercing probe as the plier jaws close. The force at which the second piercing probe is biased against the wire is determined by the degree of manual force applied to the handles of the pliers. As either piercing probe pierces the insulation surrounding a wire, the body of the pliers is brought to the same electrical potential as the wire. A wire lead extends from the pliers and connects to a ground potential at a remote location.

Abstract: An extension beam is provided to convert a hydraulic excavator to a crane-type hoisting vehicle or to extend the length of a boom.