Features: This single sided bakelite universally board features precise 2.54mm spaced holes, 1.6mm thickness, and an 18x30cm size with excellent flatness for high standard experimental needs. Designed with 1.0mm oversized holes to accommodate nearly all standard pin components, enhancing projects flexibility and compatibility. Equipped with edged signals access pad for quick connection when building prototypes or engineering samples with signals inputs, saving time and effort. Ideal for electronics experiments, prototyping, and educational demonstrations, perfect for both hobbyists and professional engineers. Made from bakelite materials with excellent thermal resistance and stability, ensuring long lasting performances for various circuit testing applications. Specifications: Size:Approx.18x30cm/7.08x11.81inch Thickness: 1.5MM Spacing: 2.54MM Hole: 1.0MM Number of layers: single side Base Component: copper Insulating Component: organic resin Insulation layer thickness: conventional board Flame retardant properties: VO board Processing technology: electrolytic foil Reinforcement Component: paper base Insulating resin: phenolic resin Package Includes: 4pcs Phenolic Prototype Board note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you donot mind before you order. 2.Due to the differences between different monitors, the picture may not reflect the actual color. Thanks for your understandings.