Threaded fasteners made of metal, Bolts made of metal, Nuts made of metal, all of the foregoing for use in natural gas distribution, waterworks, sewer, plumbing, oilfield, or pipeline fields; Magnetized tracer stations, namely, magnetized connectors made of metal specially adapted for non-electric pipeline tracer wires of metal that are buried below ground level for use in locating the pipeline tracer wires; Magnetic copper tracer wire for use in locating the buried pipelines

Hand tools, namely, valve wrenches for use in natural gas distribution, waterworks, sewer, plumbing, oilfield, or pipeline fields