【Premium Quality】The suction cup hooks are made of high quality polycarbonate with durable PVC cushion. Premium PVC material makes the suction cup hook more eco-friendly, sturdy, durable, waterproof, long-lasting, as well as transparent appearance. 【Heavy Duty Suction Cup】The suction hooks hold the top up to 6 kg, suction cups with key lock technology make it ultra-strong. The heavy duty PVC material and lever lock ensure the suction cup hook can be firmly attached to glass or smooth walls. Ensure the suction cup hooks work longer, you can wash the cup with water before use. 【Easy to Install】Just choose a clean and dry smooth surface, stick the suction cups and press firmly on the top to squeeze out the air, then lower the suction hooks to lock it. No tools needed! 【Removable and Reusable】No tools needed to remove it! Simply lift the hook to remove the suction cup, will not leave any marks on the wall. If you want to change the place to use it, you can remove and clean the suction