4-40pcs PCB Boards Prototype Set Green 2x8/3x7/4x6/5x7/7x9cm Double Sided Circuit Boards Universal PCB for DIY Soldering Project

4-40pcs PCB Boards Prototype Set Green 2x8/3x7/4x6/5x7/7x9cm Double Sided Circuit Boards Universal PCB for DIY Soldering Project

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