The 1776058-1 is a J76 series over-the-barrier jumper used to connect two adjacent circuits on compatible terminal blocks. Constructed from tin-plated brass for reliable electrical contact and corrosion resistance, this component is specifically designed for BUCHANAN double-row barrier strips. It is compatible with blocks featuring both 0.4375-inch and 0.375-inch centerlines. This jumper simplifies wiring in applications requiring commoning of terminals, such as in power distribution or signal routing.