Aprince Suction Cup Hook Holder - Super Suction - Set of 2 Buttoned Super Strong Suction Cup Hook Bathroom Kitchen Vacuum Stainless Steel &hellip; Sucker: Plastic; Hook: Made of SUS304 stainless steel. Size: 5.6*3.8*4.8cm. Set of 2. Suction works best on ceramic tile, glass, mirror, granite, stainless steel, acrylic, laminate and any non-porous surface with glossy finish. ATTENTION TO OUR VALUED CUSTOMERS: FOR BETTER RESULT: Please kindly do not put on surfaces like unfinished marble, porous or rough surfaces, porous painted walls, or across grout lines if possible. Super strong suction power. Can bear 6KG weight for 1-1.5 years. For short time it can bear up to 30KG, however, we recommend do not overloading. The hook can spin 360 degree freely. No worry about the position. Maintenance Reminder: If after installation at period of time you found the red ring on the button gives reminder that the suction cup tends to fall off, it may be the surfaces or the suction cup was dirty, so you need to clean it first and try to put on again by pressing the button until the red ring disappears. For more guidance in order to use this item long-life, please kindly make sure to read our description on how to maintenance the suction. If suction cup still doesn't work, please contact us, we will try to help you. By following guidance on the below description, How simply to use Aprince Suction Cup Hook : Press it on the wall, push the button, it will stick to it firmly, approximately bear weight up to 6KG for 1-1.5 years