840 Tie Points: 128 groups of 5 connected terminals, 8 bus of 25 connected terminals

Reusable for fast build a prototype of an electronic circuit will accept transistors, diodes, LEDS, resistors, capacitors and virtually all types of components

No soldering required

Can modify or revise the circuits easily

Fit for jumper wire of 0.8mm diameter standard 2.54mm hole spacing

Adhesive sheet on the back side of the board, multiple breadboards can be spliced together too