[Smooth Surface Application]: Our suction cups can be sucked on all smooth surfaces such as windows and glass, ceramic tiles. But water can knock it down. [Easy to organize]: The supplied wire and transparent knurled nut make it easy to organize the kitchen accessory space and perform DIY furniture installation or hold decorations etc. [Dimensions]: diameter : 40 mm, thread height M4: 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 the car In the hot summer environment, the suction cup can help to Hang the sun visor 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 a spoon or spatula. Our sucker helps to deal with this problem. It can be easily adsorbed on smooth wall and hang things well. DIY Decoration If you are a DIY decoration lover, then the suction cup is