MDW DIY Multi-Sized (15x20CM,9x15CM and 6x8CM) Double Side Prototype PCB Universal Printed Circuit Board (Green) Including three size (15x20CM,9x15CM and 6x8CM)double-side prototype board Thickness :approximately 1.6mm;Grid : 0.1inch (2.54mm);Material:glass fiber 1 Pcs 15x20CM Double-Side Prototype PCB Board 1 Pcs 9x15CM Double-Side Prototype PCB Board 1 Pcs 6x8CM Double-Side Prototype PCB Board