The Global Specialties GS-090 Solderless Bus Strip, 90 Tie-points connects easily by way of molded key tabs to other GS Series bus strips, or breadboards. This bus strip comes with red and blue lines indicating continuity and allowing for convenient and easy view of circuit connections. Use the GS-090 for signal and power connections in breadboarding experiments and circuit design. This strip is made of ABS plastic with phosphor bronze contacts.