10 PCS 73mm x 100mm PCB Board Prototype Kit Protoboard Copper Strip Board Circuit Board Breadboards 957 Holes Perfboard Universal Printed Circuit Breadboard for DIY Soldering Electronic Projects. Easy soldering: the prototype boards are thick and single sided, and the plated holes are pre-coppered; The single-sided PCB prototype stripboard is very handy and easy to solder components and sensors.