Frentaly Total 40 PCS 10pcs 2x8cm, 10pcs 3x7cm, 10pcs 4x6cm, 10pcs 5x7cm Mixed Double Dual Sided Side DIY Prototype Circuit Breadboard PCB Universal Board(G) Mixed 40 PCS 10pcs 2x8cm, 10pcs 3x7cm, 10pcs 4x6cm, 10pcs 5x7cm point to point DIY soldering Material: Dual Side PCB Hole Diameter = about 1mm Hole pitch: standard 2.54 mm Dimension: 10pcs 2x8cm, 10pcs 3x7cm, 10pcs 4x6cm, 10pcs 5x7cm