BephaMart Screw Shield V3 Terminal Expansion Board For Arduino Compatible UNO R3 Shipped and Sold by BephaMart We use Arduino to do work, always feel bad connection on the port. Either use bread plates into line, either using the sensor cable expansion board with Dupont, feel less reliable, and now we launch a terminal expansion board can be directly screwed onto the thread of the terminal, that is reliable, and convenient. It also increased the pins for easy connection to a digital or analog sensors. 2 x Screw Shield V3 Terminal Expansion Board