[Screw Fixation]: Each heavy duty suction cup comes with a screw and thread, allowing easy installation in desired locations, enhancing stability and safety, and preventing slipping or falling of items [Powerful Suction]: 18 black PVC suction cups complete with M6 screws locknuts, featuring a super strong adhesive design that securely attaches to various smooth surfaces such as glass, walls, doors, porcelain, and car windshields, with a weight capacity of 2.2lbs [Thick and Sturdy]: Measuring 5.5x2.85cm/2.16x1.1inch, the thickened suction cups for glass are sturdier and more sturdy than regular , ensuring long-lasting stability and reliability [Easy to Install]: In order to avoid deformation or poor results of the suction cups during transportation, soak them in 100°C hot water for about 6 minutes. Next, when the sucker holder is back to its state and dry, press the sucker suction pad forcefully onto a smooth, clean to install them [Widely Used]: These window strong suction pads are versatile, suitable for securing license plates to the inside of windshields, holding car , attaching decorations to and walls, and hanging bathroom towels, thereby enhancing convenience and organization in your life, Weight: 0.71429772888 pounds, Manufacturer: HWIREUIGT