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Description: Material: Bakelite Color: Like the picture show Quantity: 1 pc Each measures 5 x 7cm with 2520 through holes (0.1 inch industrial standard spacing) for mounting components Referencing numbers printed on both sides for easy reference of individual holes Specification: Dimension: 5 x 7cm Thickness: 1.5mm Hole pitch: 2.54mm Hole inner diameter: 1.0mm Package included: 1 x 12 x 18cm PCB prototyping printed circuit experimental board