Universal PCB Circuit Protoboard Double Sided Breadboard Prototyping Board

90mm x 150mm / 3.5" x 5.9". 80mm x 120mm / 3.2" x 4.7" 30 x 42. 70mm x 90mm / 2.8" x 3.5" 26 x 31. 60mm x 80mm / 2.4" x 3.2" 22 x 27. 50mm x 70mm / 2.0" x 2.8" 18 x 24. 40mm x 60mm / 1.6" x 2.4" 14 x 20.

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