Usage Tips:Designed for electronic enthusiast, technicians, students, engineers, this circuit board is easy to use. Made of for long time and durable use. It has a simple design, but very practical in use, giving you a . Also can be a good gift choice for your friends, they will like it. Features -Color: Green -Material: glass fiber, copper, tin -Size: 8.00X2.00X0.15cm/3.14X0.79X0.06in, 3x7cm/1.18x2.75in, 4x6cm/1.57x2.36in, 5x7cm/1.96x2.75in Pitch: 2.54mm - Can be widely used in daily DIY soldering, maintenance experiments, etc. It is a very good choice for circuit boards. - It is made of and sturdy materials, professional and practical, and can be used with confidence. - Standard IC pitch, universal PCB board, flat and all holes are in the middle. - With precise design and good working performance, it is a very good circuit board. - Special design and it is in fine craftsmanship. It is the best replacement for your old, broken one. Package list: 5 x 2x8cm breadboards 5 x 3x7cm breadboards 5 x 4x6cm breadboards 5 x 5x7cm breadboards