Amp -Proto Shield prototype expansion board Highlights generic brand Proto Shield prototype expansion board Description: Used in conjunction with the Duemilanove ProtoShield prototype expansion board. The circuit is used to build a prototype, can be directly soldered components on the board, you can also connect the above circuit mini breadboard. Breadboard and circuit board through double-sided adhesive connections, sold breadboard and circuit board are separated. The ProtoShield two-button, two-circuit LED prototype expansion board can be used directly. All pins and power wires are perfectly matched and allow you to create a circuit prototype. Size Chart: Size: approx. 100 x 68 x 8mm / 3.94 x 2.68 x 0.31inch Package Includes: 1 Piece Prototype Expansion Board Note: Please allow 1-3mm differs due to manual measurement. Due to the different display and different light, the picture may not show the actual color of the item. Thank you for understanding.