About this item:
★32 pieces of double-sided PCB prototype boards well packed in a plastic tray which is very easy to store and take out 
★5 different size boards to meet your demands when designing your own Arduino kits, electronic experiments, and DIY projects 
★4 mounting holes at the corners of the board are very convenient for installing them together. 
★Pre-tinned plated holes on the board make it very handy to solder components and sensors for your projects 
★High quality of durable glass fiber –FR4 material with 1.6mm thickness makes a very solid and sturdy prototype circuit board