Electrical connectors; electrical terminal blocks; housings in the nature of supports for printed circuit boards; pins for electrical circuits, namely, Test pins for testing printed circuit boards; clamps for electrical circuits, namely, Electric circuit closers, Electric circuit openers, Electric circuit switches; short-circuit jumpers for electric circuits, namely, Electric circuit closers, Electric circuit openers, Electric circuit switches; magnets; test probes, namely, test pins for testing printed circuit boards, Test adapters for testing printed circuit boards, Continuity test apparatus for electrical circuits, Testing apparatus for testing printed circuit boards; housings in the nature of supports for printed circuit pins for electrical circuits; housings for printed circuit boards; electrical wires; electrical cables; electronic connectors; electrical connection boxes; electrical distribution boxes; electrical power connectors; electrical power distribution blocks; electrical sockets; connection terminals, namely, electrical terminators, Electrical connector housings, Electrical header connectors, electrical terminal boxes, electrical terminal blocks; electric junction boxes; probes for testing integrated circuits; connectors for electronic circuits; electronic components for printed circuit boards in the nature of capacitors, connectors, filters, oscillators, relays, switches, transformers, resistors, semiconductors, integrated circuits, rectifiers, transistors; threaded electrical cable connectors; electric cable connectors; power connectors; electrical branch boxes, namely, junction boxes, fuse boxes, terminal boxes, gag boxes, distribution boxes; plug-in connectors; electrical terminals, namely, electrical terminators, Electrical connector housings, Electrical header connectors, electrical terminal boxes, electrical terminal blocks