Electrical fittings, namely, electricity conduits and electric couplings; electricity liquid-tight conduits; electrical conduits made of metal; electrical conduits made of plastic; rigid conduit and flexible conduit fittings sold as a unit with electrical conduits; insulated and uninsulated electrical connectors; electrical couplings; electrical adapters; cable connectors, namely, metal grounding threaded bushings; plastic conduits and covers therefor sold as a unit for use in electrical inst...