100% Brand new and high quality PCB BoardHole Diameter: about 1.0mmHole Pitch: 2.54mmBoard's thickness: 1.6mmNumber of the PCB holes: 2X8CM:6X28=168(holes)3X7CM: 10X24=240(holes)4X6CM: 20X14=280(holes)5X7CM: 18X24=432(holes)Colour: Black + Green + BlueMaterial: Metal + PlasticPackage Contents:5 x 2 x 8 cm breadboard5 x 3 x 7 cm breadboard5 x 4 x 6 cm breadboard5 x 5 x 7 cm breadboard5 x 6 x 8 cm breadboard10 x 2 pin PCB connector10 x 3 pin PCB connector20 x 40 pin connector20 x 40 pin femaleOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.