This product is a solderless breadboard set, made of durable plastic material, with good teature, safe and practical. Easy to install and use, it can be easily applied to your project. It is a very practical accessory that will meet your needs well. Features Color Mixed colors Material Plastic Size 8,105,301,00cm3,182,080,39in Small breadboards for easy assembly and storage of small circuits. Just insert 400 holes for electronic circuit testing and eperiment. Parts and wiring changes can be easily replaced by simply pulling out the electronic circuit and inserting it. Combinations of different lengths of jumper wires, different uses, easy to identify and easy to use. Excellent craftsmanship, meticulous down to the smallest detail to give it an elegant and beautiful appearance. Simple in structure, easy to use, not easy to deform, you can use it with confidence. Packing List 2breadboards 65jumper wires