This high quality Biwire panel is made in the UK and is streets ahead of the usual offerings. The crescent shaped body offers excellent rigidity compared to rectangular panels. The binding posts and bus bars are brass with heavy gold plating. Can be used alone or with one of the 2 matching crossover circuit boards that we stock, the board simply slides into the back of the panel and solders to the rear of the terminals. The binding posts accept bare wire to 5mm, standard banana plugs or 'U' shaped spade terminals. Comes complete with bonded foam sealing gasket and fixing screws.