Description This Breadboard is a mini-board for connecting the jump wires and separated electronic components together without using the electric soldering iron to weld the wires. Things would be easier when you add a breadboard in your project like making a little demo. The breadboard has two power buses, 10 columns, and 30 rows - a total of 400 ties in points. All pins are spaced by a standard 0.1". The two sets of five columns are separated by about 0.3", perfect for straddling a DIP package over. Besides, at the back of the breadboard has a self-adhesive. As a matter of fact, you can attach it anywhere you like in your Arduino or Raspberry Pi project to make your work more compact and flexible. Features 10 columns, 30 rows - 400 points breadboard. self-adhesive at the back and easy to use. Part List 1x400 Point Solderless Breadboard