5Pcs Fr4 Universal Double Side Prototype Pcb Board 7Cm X 9Cm consists of five FR4 doublesided prototype boards. Each board measures 7 cm by 9 cm and is suitable for electronics prototyping and testing. Key benefits Durable FR4 substrate provides mechanical strength and reliable electrical insulation. Doublesided copperclad construction enables more routing options and denser circuit layouts. Universal 7 cm x 9 cm size fits a wide range of small projects and layout templates. Supports standard prototyping processes such as etching, drilling, and soldering for quick iteration. Key attributes Material: FR4 (fiberreinforced epoxy glass) Board type: Doublesided prototype PCB board Copper: Copperclad on both sides Size: 7 cm x 9 cm Quantity: 5 pieces Application: Prototyping and circuit layout testing Use cases Prototyping microcontroller or sensor circuits on a compact, reusable platform before committing to a final PCB design. Educational purposes in electronics labs or classes to teach circuit layout, soldering, and PCB fabrication techniques. Smallscale project development or work where a custom, compact PCB layout is needed for a device or module.