Features: This 36PCS double sided PCB board set includes 5versatile size with standard 0.1in spacing, perfect for prototyping circuits and accommodating various DIP components. Made from durability 1.6mm fiberglass , each board features 4mounting holes for secure stacking and space efficient organization in electronics projects. Ideal for electronics students, hobbyists, and engineers seeking reliability prototyping tools for analog circuits, discrete circuits, or customs electronic designs. Use these multipurpose circuit board to build test circuits, repair electronics, or create educational STEM projects in workshops, labs, or home maker spaces. The compact set combines 36 reusable boards with industry standard specifications, offering exceptionals conductivity and heat resistance for professional electronic experimentation. Specifications: Component:PCB Product Name: Multisize Circuit Board Packaging quantity: 32pieces Thickness:Approx.1.6mm 8pieces Size:Approx.2x8cm/0.78x3.15inch 10pieces Size:Approx.3x7cm/1.18x2.76in 8pieces Size:Approx.4x6cm/1.57x2.36in 8pieces Size:Approx.5x7cm/1.97x2.76in 2pieces Size: Approx.7x9cm/2.76x3.54inch Spacing: Standard 1tenth of 0.1in Installation hole: There is a mounting hole on each of the four corners of each PCB Scope of application: Analog circuit Discrete circuit electronic project Various DIP type component Package Includes: 36PCS Circuit Board note: Please allow 1-10mm errors due to manual measurement. Due to the differences between different monitors, the picture may not reflect the actual item color.