This Solderless Breadboard 3220 Point is an excellent size with more than enough room for more advanced prototyping, having Three binding posts and a great aluminum backing plate. Solderless breadboards are commonly used for prototyping because they allow you to quickly build temporary circuits without soldering. Breadboards accept most through-hole parts and up to #22 wire. When you’re done or want to change your circuit, it’s easy to take your circuit apart. The connection between the power line is broken in the middle, like most breadboards. This breadboard has 2 power buses on either side for carrying power lines.