Suitable for beginners: High quality parts and intuitive design, specially designed for electronics beginners to learn to solder electronic components. Fun and Educational: The practice board has three adjustable potentiometers that change colors when rotated,it is a fun welding practice board Creative gift: The practice board is small and has small holes on the board for hanging, which can be given to friends or family Easy to assemble: The space between the pads and the pads on the PCB is large enough, the assembly is convenient and simple, and there is a pdf on the package Wide application: suitable for welding skills training, DIY production, project design, electronic competition, holiday gifts, etc.