20pcs/set 4Size Double-Side Protoboard Circuit Universal DIY Prototype PCB Board

20pcs x PCB prototype board. Quantity: 20pcs per set (5pcs 5 7cm, 5pcs 4 6cm, 5pcs 3 7cm, 5pcs 2 8cm). Color: as picture shows. Material: Glass fiber FR4 Class A material. I send goods within 12 hours.

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