As an interior design lion, many times go to the construction site to communicate with customers, and the load-bearing wall inspection tool that you carry with you is your own. With a fist, he hit the wall twice, and basically can judge whether it is bearing the wall or not by the feel of the hand. But occasionally there are times when it is not working, for example, a 30cm thick wall cannot be judged at all. It stands to reason that the walls above 24cm are basically load-bearing walls that have not run away, but sometimes there are exceptions, so in a responsible manner, we must improve professionalism and accuracy, so we started the R51 Wall Concrete Rebar Detector.