This is your tried and true full size solderless breadboard! It has 2 split power buses, 10 columns, and 63 rows - with a total of 830 tie 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. The board accepts wire sizes in the range of 20-29AWG. This board also has a self-adhesive on the back. The boards also have interlocking parts, so you can hook as many together as you'd like.