Item Descriptions:-[Pack of 3] Pack includes expansion boards with mini breadboards for versatile circuit prototyping, offering ample resources for multiple projects.-[Effortless Circuit Planning] Streamline and test your initial circuits rapidly and easily, simplifying the early stages of your electronic projects.-[ProtoShield Functionality] ProtoShield board with 2 LEDs and 2 button circuits for immediate usage, providing access to all pins and power configurations.-[SYB-170 Compatible] Mini breadboard compatible with UNO R3, adhering securely to the circuit board via double-sided adhesive.-[Convenient Package] An all-in-one compatible with Ar-duino prototype expansion, allowing quick experimentation and development.Package:3Pcs Proto Shield Prototype Expansion BoardItem Specifications:Material:PlastiwhitesDimensions:70x54mmColor:White