[Suitable for small items] These mini-breadboards are useful for small projects. In particular, they are useful for holding the smaller stacking shields so the pins on the shield don't get damaged.
[Firmly connected] Great little breadboards for creating small circuits. Good solid connections and decent quality. They can interlock with one another in a certain orientation as well.
[Less wiring] Rugged and durable small breadboard. It is very suitable for transferring arduino projects to smaller projects with minimal wiring.
[Multiple colors] The pins tightly and firmly fix the components. The colors are very bright, which helps to identify the board on each board.
[No need to solder] You can connect wires together to form a circuit, instead of soldering a bunch of stray wires, they are small, easy to stick, and of good quality.