Description Combines the power of screw shield and prototyping shield. This ProtoScrew shield offers a better way to do prototyping. The Screw terminal can be screwed directly to the terminal on the thread and is reliable and convenient. It can be plugged into the Arduino controller. You can use this shield to save yourself from the bad port connection. Feel secure with this arduino-compatible screw shield. The ScrewShield extends all pins of the Arduino out to 3.5mm pitch screw terminals. It also has a lot of the utility provided by Arduino Protoshield including: a large prototyping space of both connected and unconnected 0.1" spaced through-holes a couple 5V and GND bussesa LED (D13) and two buttons (reset and A5/D19). In the case that you have a breadboard the shield do not ship with breadboard. The best suitable breadboard is