Double Sided Strip Board Printed Circuit PCB Vero Prototype Track Breadboard. Product Name: Double-sided Pengxi fiberglass circuit board. 4×6 / 2×8 / 5×7 / 3×7 / 6×8 / 7×9 / 8×12 / 10×10 / 10×15 / 9×15 / 10×22 / 12×18 / 13×25 / 15×20 / 18×30 / 20×30 / 30×40 CM. Board material: glass fiber material (FR-4). Hole pitch: 2.54MM. Features: Compared with professional PCB printed circuit boards, the hole board has the characteristics of low cost, easy to use and flexible expansion. According to your choose. Please list your special requests color, packages, etc. (15-35 Days to Delivered). Please contact me before you return it. Not accept returning of electronic components. Feedback is very important to us.