MaxHold Suction System - The Best or Nothing! About MaxHold Suction System MaxHold are the market leading in suction cup of bathroom accessories and shower baskets. Based on patented technology, MaxHold products are innovative to use industrial rubber in stead of PVC OR TBR. The rubber has features of water proof, oil resistance, cold and hot resistance. Amazing Holding Power Supported by patented suction system, each MaxHold suction cup could load not only 10lbs, not only 20lbs but more than 30lbs, which has been proved by the SGS test organization. Installation Clean - clean the mounting surface thoroughly Position - position the metal part with the suction cup Press - press the flat rubber base to exhaust the internal air lightly Twist - twist the knob clockwise to lock until fully tight Tell you a breaking news - MaxHold suction cup is the secret of Spiderman!