Heavy Duty Suction Cup Hooks Double vacuum suction ensures it can work in different temperature. User friendly control. No drilling, no screws, no tools. Just press, push and then lock the hook. Remove easily and do not leave unsightly glue marks or residue. Quite substantial suction cup hooks. Reusable, non-toxic, odorless and safe to the environment. Waterproof and oilproof. It is very suitable for bathrooms, bedrooms and kitchen. Note: About Remove: Just release the lock, if gets stuck, use small knife to release the air. Please confirm whether the suction cup hooks sucks firmly before hanging heavier objects or valuable items. Specification Materials : PET & Plastic Bearing Capacity : up to 6.61 lb Length : 3.5 inch Width : 1.7 inch Diameter of Suction Cup : 2.7 inch Package : 2 x Suction Cup Hooks Ease To Install Step 1: Choose a smooth surface, clean and dry the smooth surface. Step 2: Remove the transparent film and press the suction cup on smooth surface Step 3: Pull the hook up to 90 and push all the air out in the suction cup and then pull it down to lock. Step 4: The suction cup hook will stay firmly and then you can hanging items. About Remove: just release the lock to exhausting air, you can use a small knife if the suction cup get stuck.