ZY-208 3220 hole Solderless Breadboard Free the welding circuit test board

3220 connection points (insertion holes) Total: 2520 connection point circuit area, seven 100 connection point distribution bar, providing 14 power rails Standard 0.1 "(2.54mm) pitch for IC mounting; external power connector; aluminum rugged backplane Nickel silver alloy pins are pre-stressed, spring loaded and non-corrosive for long-term reliability; white plastic body with easy pin count printed rows and columns 65 jumper-to-male jumpers with different lengths and colors - no time-consuming wire making required; breadboard size: 7.25 x 7.5 x 0.3 inches (184 x 190 x 9 mm) The perfect prototyping circuit, electronic and electrical experiments without soldering; very much in line with the Arduino