The two sides of the PCB Prototype Board are engraved with different characters, each character represents each plated hole to help you solder components. 20 pcs of double-sided PCB boards in 6 different sizes: 5 pcs 2x8cm, 5 pieces 3x7cm, 5 pcs 4x6cm, 2 pcs 5x7cm, 2 pcs 6x8cm, 1 pcs 7x9cm.
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