ITEM NAME:Keyestudio Arduino NANO Screw Terminal Breakout Shield IO Description: This is a small, simple Nano shield which has brought all pins of the Nano, Convenient for us to connect wire and make a experiment. The shield comes with two positioning holes, which is very convenient for you to fix the shield in other positions. Material: fr-4 epoxy glass fiber board Detailed product size: 5.3cm X 3.6cm X 1.2cm Package Includes: 1 Piece NANO IO Shield.1 Piece NANO IO Shield. This is a small, simple Nano shield which has brought all pins of the Nano.