Connectable: Multiple boards can be connected together for expansion, with adhesive on the back for easy connection. Mini breadboard: 170 point breadboard with tight metal springs under the connection more→points, the connection works great, the springs are perfectly aligned with the points, making all 170 points the same tightness. Multi-color: 6 different colors, red, blue, yellow, green, white and black. Total 12 pcs. Suitable for: Compatible with Raspberry Pi (rpi) and Arduino, led diodes, screw terminals, Dupont wires, connectors, resistors, capacitors, ICs, DIPs, sensors, transistors and other power components or devices. Widely used: For prototype circuits, electronics, electrical experiments …