Features: The universal board is a circuit board that is covered with pads according to the standard IC spacing (2.54MM), and can be inserted with components and connections according to your own wishes. Because it looks like the whole board is a hole, it is also called "hole board". Compared with professional PCB boards, perforated boards have the advantages of low threshold for use, low cost, convenient use, flexible expansion, etc. You can cut these pc boards into any shape any size, it can meet all your needs. The double side of the original circuit board is very strong and durable, and a tin plating process makes the welding component easier. The material is all FR4 full glass fiber plate, which can effectively prevent the pad from falling off. Specifications: Material:Plastic Size: Approx.6x8cm/2.36x3.14inch Thickness: 0.4mm Aperture: 1.0mm (error 5%) Hole spacing: 2.54mm External dimensions: 62.4x80.2mm Weight: 4g The soft experimental board can be folded and not deformed Package Includes: 1x PCB Board note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thanks for your understandings.