Welcome to our shop! Large suction cup setactual suction cup size is 40mm. Easy to hang: thread and knurled nut provided allow you to easily fix the material to be joined. Great for hanging wreaths and larger decorations on windows mirrors or any other clean smooth non-porous surface. Once applied it is unaffected by heat or cold. Premium QualityBathroom utility storage hooks are made of high strength clear PVC that is beautiful sturdy and waterproof. Convenient for repeated use just wash then gently dry. Non-marking removal: Suction cups won't yellow, deteriorate or lose adhesion over time. Use a flat blade to release the vacuum without damage without marks and it's ready to use again. Instructions: Make sure surface is clean. Use only on smooth surfaces such as glass, metal, ceramic tile, plastic, formica etc. Press the suction cup on the surface to release the air from the underside of the suction cup. After testing objects to ensure the safety of suction. Delivery quantity: 10 PCS Product color: transparent Product dimensions: 4cm in diameter Attention: 1, manual measurement, please allow 1 - 3cm error!!! 2, due to the shooting, there is a certain color difference between the physical object and the picture!!! 100% satisfaction - Our customers are our priority. If you find any problems with the products after receiving the goods, such as damage and incorrect quantity, please contact us immediately. We do our best to provide you with satisfactory after-sales service.