Double-sided copper clad plate with plastic in the middle and a layer of copper on both sides. For making double-sided PCB circuit boards, you can carve the circuit wiring diagram you need on it with a knife or a carving knife, and then weld the electronic components. 7 10 means: 7cm wide, 10cm long, various sizes and specifications are available. Product specification: 7 10; 57; 812; 1010; 1015; 1020; 1218; 1520; 20 30 (unit: cm) Thickness: 1.5mm Tip: The appearance of the copper clad plate may be slightly scratched, which is a normal phenomenon and does not affect the use. The picture is a live shot. Copper Clad PCB Circuit Board Double Sided Universal Board Photo Sensitive DIY. Product specification: 7 10; 57; 812; 1010; 1015; 1020; 1218; 1520; 20 30 (unit: cm). The appearance of the copper clad plate may be slightly scratched, which is a normal phenomenon and does not affect the use. You can find more products in different material, type, color, sizes and shapes in our shop! According to your choice. Good Good Good quality. Please take a look at more great items offered in my store, and we do hope you enjoy your shopping experience.