DIGOBAY 3pcs Prototype Breakout Shield PCB Expansion Board Breadboard DIY Kit for Raspberry Pi 4B 3B plus 3B 2B B plus A plus

Specification: Expansion Board: PCB material: high quality FR-4 material PCB layers: 2 layers Pads: tin plated Size: 66mm * 57mm * 1.6mm Pin Connector: Pin pitch: 2.54mm Female Connector pitch: 2.54mm Pin number: double row 2 * 20P Pin length: 3mm/12mm Copper Pillar: Size: M2.5 11mm / 14mm Screw: Size: M2.5 * 5mm Product list: 3 x Expansion Board 3 x Connector 2x20pin 12mm 3 x Connector 2x20pin 3mm 12 x Copper Pillar 11mm 12 x Copper Pillar 14mm 24 x Black Screw