A000082 Arduino Prototyping Shield
The Arduino prototyping shield makes it easy for you to design custom circuits. You can solder parts to the prototyping area to create your project, or use it with a small solder less breadboard (not included) to quickly test circuit ideas without having to solder. It's got extra connections for all of the Arduino I/O pins, and it's got space to mount through-hole and surface mount integrated circuits. It's a convenient way to make your custom circuit and Arduino into a single module. (see data sheet attachment)
Arduino 1.0 pin out
Large 0.1 prototyping area
14pin SMD footprint (50mils pitch)
20pin through hole footprint (100mils pitch)
Long and easy to solder ground/5V rails
No other components provided with shield.