GS Series Transparent Breadboards & Bus Strips Global Specialties Transparent Prototype Products are available in a variety of configurations: GS-100T, GS-630T, and GS-830T. The GS-100T Bus Strip is an economically priced bus strip that connects easily via molded key tabs to other economy line breadboarding sockets or bus strips. Global Specialties GS-630T and GS-830T solderless breadboards offer 630 and 830 tie points respectively.