This PCB has the basic layout of a half-sized breadboard. With its identical layout, you can transfer your prototype made on a breadboard onto this PCB with ease. It has 4 power rails, 10 columns, and 30 rows – with a total of 400 soldering points. All pins are spaced by a standard 0.1″. The two sets of five columns are separated by 2 columns with a distance of 0.4″ between the holes.