Note:20pcs=5pcs 5X7+5pcs 4X6+5pcs 3X7+5pcs 2X8Description:Dimension: 5x7 4x6 3x7 2x8 cmMaterial : double Side Copper PCBHole Dia:about 1mmHole pitch : standard 2.54mmQuantity :20pcsFor point to point DIY soldering Packaging List:5 * PROTOTYPE PCB 5*75 * PROTOTYPE PCB 4*65 * PROTOTYPE PCB 3*75 * PROTOTYPE PCB 2*8