Smraza 100pcs Double Sided PCB Board Kit, Prototype Boards for DIY Soldering and Electronic Project Circuit Boards Compatible with Arduino Kits, 30PCS 40 Pin 2.54mm Male and Female Header Connector auspowers_batchone Original Version (SWTC-26)

Original Version (SWTC-26)

Made with environmentally-friendly and chemical-resistant materials

Yellow Chromate Zinc Coating

and you can change a new screw

Smraza 100pcs Double Sided PCB Board Kit, Prototype Boards for DIY Soldering and Electronic Project Circuit Boards Compatible with Arduino Kits, 30PCS 40 Pin 2.54mm Male and Female Header Connector auspowers_batchone Original Version (SWTC-26)Smraza 100pcs Double Sided PCB Board Kit, Prototype Boards for DIY Soldering and Electronic Project Circuit Boards Compatible with Arduino Kits, 30PCS 40 Pin 2. 54mm Male and Female Header Connector Product Features Selection of Multi Sized Proto Boards 30 pieces double sided prototype boards of 4 different size to meet your demands when designing your own Arduino kits, electronic experiments and DIY projects. (10 pieces 2*8cm, 10 pieces 3*7cm, 5