Features: Double side prototype board with 2.54mm plated through holes ensuring soldering and compatibility for circuit designs. Enhances conductivity and durability, accommodating components across 9x15cm workspaces with standardized 100mil spacing. Ideal for electronics engineers, hobbyists, and students requiring prototyping for circuitry projects. Perfect for assembling amplifiers, sensors module, or microcontroller base systems in workshops, or educational environment. Minimizes drilling effort while withstands repeated rework, making it essential for iterative development cycles. Specifications: Component: Plastic+Metal Size: Approx.9x15cm/3.54x5.9inch Package Includes: 5Pcs Circuit Board note: 1.Please allow 1-2cm errors due to manual measurement, making sure that you not mind before order. 2.Due to the differences between different monitors, the picture may not reflect the actual of the item.