104pcs Double Sided PCB Board Kit, Prototype Boards for DIY Soldering and Ele…
(104pcs Double Sided PCB Board Kit, Prototype Boards for DIY Soldering and Electronic Project Circuit Boards Compatible with Arduino Kits, 30PCS 40 Pin Male and Female Header Connector. （10 pieces 2 8cm, 10 pieces 3 7cm, 5 pieces 4 6cm, 5 pieces 5 7cm and 1 pieces 7 9cm PCB boards).