Caltronics Double Row Barrier Strips - $35 (SLO)

Lot of Caltronics Double Row Barrier Strips, thermoplastic, 20 amp rated, 6/32 screws (2) 22 position barrier strips - brand new still in sealed package (7) 18 position barrier strips - used (18) 8 position barrier strips - used (8) 7 position barrier strips - used (5) 2 position barrier strips - used See pictures for condition.
How does a barrier strip work? Barrier strips are screw-type electrical connectors that allow more than one circuit to connect to another circuit.
Wires are clamped down to a metal part by tightening of a screw.
Multiple screw terminals are arranged such that the metal strips are separated by a barrier or insulating block.