20 Gang Brass/Bakelite Terminal Bus Bar by Sea Dog®. Electrical Buss Bars provide a convenient way to connect electrical wires, prevent shorts, eliminate splicing, tidy up wire harnesses, and conserve panel space. Non-fused, these distribution blocks are used primarily for routing and connecting power or ground circuits. Designed for use with tinned copper marine wire which shares the same expansion rate to prevent loosening wires and reducing electrolytic corrosion caused by pairing two disparate metals. Constructed of molded Bakelite and stamped brass.