Set of 20 double-sided prototype PCB boards for Arduino projects, available in sizes 5 x 7 cm, 4 x 6 cm, 3 x 7 cm and 2 x 8 cm (approx. 1.97 in x 2.76 in, 1.57 in x 2.36 in, 1.18 in x 2.76 in and 0.79 in x 3.15 in). Copper-clad boards, thickness 1.6 mm (about 0.063 in), surface finish tinned and minimum hole size standard 2.54 mm (0.10 in). Customization available. Brand - ReYeBu.