5eBoard Reconfigurable Solderless Circuit Breadboard 4x6 Professional Kit &ndash; Blue/White FREE shipping on orders over $39.95 in US; for other countries, click View shipping rates and policies below Board size: 4" x 4" and 4" x 6" configurable Baseboard color: blue; Assembling block color: white One set contains: one 4"x4" and two 2"x2" baseboards, 60 assembling blocks, four board-to-board fasteners, a separator, and two bus lines (red and black). Multiple boards can be joined together using provided fasteners for large projects