For a temporary or permanent single arm person, it is not easy to clean armpit, back body, elbow and back side of forearm. Available wall mounting scrubbers do not clean armpit concave thoroughly. Shower-brush cleaning elbow requires a very awkward brush holding method. L7 is to resolve these problems. L7 is a pair of wall mounting tubular aluminum. Its diamond knurled pattern is for back body, elbow and back side of forearm scrubbing. Its bent corner is for armpit cleaning. Its last function is for grabbing.