Global Specialties Economy Line solderless Proto-Boards & Breadboarding systems offer students of electronics an economical choice for breadboarding without sacrificing quality. Global has expanded its line of transparent Proto-Boards & Breadboards and have added Two new models with ABS plastic sockets with phosphor-bronze contacts are mounted on a Metal back plates for added durability. The transparent ABS plastic sockets are perfect for educational applications because they allow student and designers to clearly view circuit connections. Plastic feet and color-coded binding posts are included. Use Global’s solderless breadboards to design test fixtures, perform lab experiments and in all areas of custom electronic design applications.