The circuit is used to build a prototype, can be directly soldered components on the board, you can also connect the above mini breadboard circuit. 

Breadboard and circuit board via double-sided adhesive connections, sold breadboard, and the circuit board is separated. ProtoShield prototype expansion board with two buttons and two LED circuit can be used directly, all of the

pins and the power leads are very fit and build circuit prototyping with Arduino.

Specifications:

• The ProtoShield prototype expansion board with two LEDs and two buttons circuit
• Sided adhesive connection between the breadboard and the board
• Breadboard and the circuit board is sold separately