Breadboard 400 holes for solderless prototyping (OT140-B104)

Solid breadboard with 300 holes for components and 50x plus and 50x minus connections on the edge. Good quality.
Dimensions: 54x82x9mm Weight: 40 grams Red line for plus and blue line for minus connection. There is a double-sided adhesive layer on the back. After removing the foil, the breadboard can easily be glued. The plus and minus tracks can also be disconnected and connected to each other. A multifunctional experiment board. Can be connected to each other both lengthwise and widthwise, allowing a larger breadboard to be created.