Features: Screw terminal can be screwed directly to the terminal on the thread and is reliable and convenient. It can be plugged into the For Arduino controller. You can use this shield to save yourself from the bad port connection. Feel secure with this For arduino-compatible screw shield. Both sides of the shield are broken out to the side of the For Arduino to allow access to everything on the main For Arduino board. Stacking headers are also included so you can pile more shields on top. Specifications: Length: approx 5cm Width: approx 4cm Net weight: 24g Package includes: 1X For ArduinoNan Compatible Expansion Board