This 400 tie-point interlocking solderless breadboard is a compact, half-size prototyping board ideal for small to medium electronics projects. Measuring approximately 8.2 cm x 6.2 cm, it features a standard double-strip terminal area in the center and two removable power rails on each side, offering flexible power distribution. The power rails can be detached to reduce the width to about 3.5 cm, making it easy to mount on Arduino proto-shields or other tight spaces. Its interlocking design allows multiple boards to be “snapped” together, side-by-side or end-to-end, to create larger prototyping areas. You can also cut the board with a fine saw to form two smaller breadboards, perfect for compact or modular builds. No soldering is required, which makes it reusable, beginner-friendly, and ideal for fast circuit iteration, testing, and educational use.