This model can be contacted to the same model to get more big space for work....
Power Supply Module for Arduino 220V AC-5V DC
Holed PCB to fit any electronic component and easy for use to any circuit with good quality. Enlarge the photo to see its holes shape.
170 point Solderless mini Breadboard perfect for proto shields
A 3.3V and 5V Breadboard Power Supply Module with series diode, polarity reversal protection. The module can take 6.5V to 12V input and can produce 3.3V and +5V. Can also output 5V on USB connector and can also take input through USB connector.
FR4-Single Layer Fiberglass 10×10 Cm2 – Width: 1.5mm