This solderless breadboard has 830 tie points including four independent common bus lines for easy connections to common lines. The board has interlocking features so that you can connect multiple boards together to make a larger prototyping area.
Note that this breadboard has changed recently. Now, like many other breadboards, the power lines are offset, which will prevent you from being able to connect prototyping boards that are designed to straddle over to the power lines. The photo shows the old, aligned version.
Terminals: 830 test points, 126 separate 5-point terminals, plus 4 horizontal bus lines of 50 test points each.
Dimensions: 2 1/8" wide, 6 1/2" long.