Single/Double Sided Copper Clad PCB Circuit Board FR4 Printed Circuit Test Plate. Material: phenolic resin + copper. Layers: Single Side/Double Sided. This product might have few fingerprints, you can clean by super-fine steel-wool, Restore4, Tarn-X, Zap! Or similar before using. After that be sure to rinse and dry, you don’t want any water spots. These are ideal for making your pcb’s at home or for Ugly Bug Construction Techniques. The surface of the copper clad laminate is easy to be scratched, and it is normal to have fingerprints or scratches on the surface, which does not affect the use! Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. All dimensions are measured by hand, there may be small deviations. If you need to customize other sizes, please contact our customer service. Package includes your choice. If you are not satisfied with the item, please contact with us. Any problem, please feel free to contact with us. We care about our valued buyers, if you have any questions, our Customer Service staffs will be very glad to help you. We try our best to reply to your emails as soon as possible, however, due to high volume of daily incoming emails and time zone difference, we may not be able to reply your emails immediately. About item:For the functional products in our shop, we make sure that the functions are the same as description, but the actual color and shape may looks a little different from pictures because of the technical improvement and manufacturing variance.