Double-Sided Copper Clad Laminate PCB Circuit Board, FR4 400x300mm 15.75x11.81 inch, 1.6mm Thickness DIY Prototyping PCB Board, Name BoardDescription:* Great for building a prototype of an electronic circuit, double side copper PCB.* Mechanically supports and electrically connects electronic components using conductive tracks, pads and other features etched from copper sheets laminated onto a non-conductive substrate.* This product is widely used in product development, DIY experiments, maintenance, production, etc.* Note: The product length tolerance is +/-3mm, the width tolerance is +/-2mm.Specifications:* Product Name: PCB Copper Clad Board* Dimension : 400x300mm / 15.75x11.81 inch(L*W)* Material : FR4 Glass Fiber; Copper* Thickness : approx. 1.