[Smooth surface application]: Our suction cups can be suctioned to all smooth surfaces such as windows and glass, ceramic tiles. But water can make it fall. [Easy to organize]: The wire and transparent knurled nut provided make it easy to organize the space of the kitchen accessory and perform DIY furniture installation or hold decorations, etc. [Dimensions]: diameter : 40 mm, M4 thread height: 8 mm. [Quantity]: 8 pieces. [Good after-sales service]: If you have any problem with our suction cups, please feel free to contact us. Use on car In the hot summer environment, the suction cup can help to Hang the sunshade inside the car, just stick it on smooth glass. Then you can enjoy a comfortable driving experience. Great Kitchen Helper If you want to organize kitchen utensils well, like spoon or spatula. Our suction cup helps to cope with this problem. It can be easily adsorbed on smooth wall and hang objects well. DIY Decoration If you are a DIY decoration lover, then the suction cup is definitely your must-have. It can help you hang various decorations so that you have a very comfortable experience. It also brings great convenience to your life. Specification details hook suction cup suction cup face suction cup hook soap dish suction cup suction cup unblocker ottoman How to use 1. Firstly, you can use it on a flat and smooth surface and clean the surface with window cleaner or vinegar before use. 2. Press the suction cup and make sure that there are no gaps or cracks at the bottom of the suction cup - otherwise, the vacuum effect will be invalid. 3. Secure the items to be hung on a suction cup knurled nut.