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 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 and computer science experiments, for computer science class hobbyists experiment point-to-point projects. Size:35*47*8.8mm Note: 1. Please allow 1-3 mm error due to manual measurement and 1-3g weight error make sure you don't mind before ordering. 2. Due to the lighting of the photos and the difference of monitors, the pictures may not reflect the actual color of the real item. Please make sure you don't mind before ordering, thank you! About Shipping: 1.please pay attention to your delivery address such as: name, street, house number, doorbell/email without name, etc. is correct, or the order will not be delivered correctly. 2.All items will be shipped within 3 business days after the payment is received. Most times you will receive them within 8-12 days then. The specific delivery time is depend on circumstances. 3.During the shopping process, if you have any questions, please feel free to consult us, we will reply you within 24 hours Hope you have a pleasant shopping experience!