MaxHold No-Drilling/Suction Cup Multi-Functional Combo Caddy Organizer Basket - Vaccum System - Stainless Steel Never Rust - for Bathroom & Kitchen Storage MAXHOLD LOADING ABILITY - maximum loading is more than 30lbs. EASY INSTALLATION - no tools, no drilling, no screwing. Installation vedio link: https://www.youtube.com/watch?v=SLwdklBchKA MULTIFUNCTIONAL - in bathroom, in kitchen , in refrigerator and any smooth, non-porous surface. NEVER RUST - Real 18/8 Stainless Steel metal material and plating ABS plastic suction cup. REMOVABLE - Reuse and no surface damage. STRONG LOADING ABILITY - maximum loading is more than 30lbs. EASY INSTALLATION-no tools, no drilling, no screwing. NEVER RUST-made of SUS304 stainless steel and plating ABS plastic suction cup. REMOVABLE-reuse and no surface damage. Sution cup works best on smooth and non-porous surfase -SMOOTH glazed tile / glass /steel/mirror/PVC surface/painting surface. Doesn&#039;t work on porous surfaces-concave(convex)/cambered/porous tile/rustic tile/mosaic tile/travertine tile/porous marble/concrete and lime wall surface. Clean - clean the mounting surface thoroughly. Press - press the flat rubber base to exhaust the internal air lightly. Position - position the metal part with the suction cup. Twist - twist the knob clockwise to lock until fully tight