Package Includes: You receive 8 pcs thickened suction cups with screws, approximately 5.5 cm / 2.16 in in diameter with M6 x 14 threaded screws. The thickened edge design provides enhanced suction and strength, suitable for various applications. Strong Adhesion: These heavy-duty suction cup hooks are made of high-strength, transparent, environmentally friendly PVC material. Soft and thick construction ensures stronger suction and reliable performance on smooth surfaces. They can be securely attached and reused multiple times without being affected by temperature changes, ensuring safe and stable hanging. Anti-Corrosion Design: The screws and threads are made of 304 stainless steel, offering excellent resistance to corrosion. Ideal for use in bathrooms and outdoor environments. The screw and nut design allows for easy installation and removal, improving convenience and practicality. Easy to Install: These window suction cups can be installed directly without soaking in warm water. Simply ensure the surface and suction cups are clean, press firmly to adhere, then tighten the nut to complete installation. Simple operation saves time and effort, suitable for all users. Wide Application: These large suction cups can be used on most smooth surfaces such as glass, acrylic, metal, tiles, and car windshields. Ideal for use in bathrooms, kitchens, offices, cars, and other locations. Product Name: 8 pcs Thickened Suction Cup Hooks Product Size: Diameter 5.5 cm / 2.16 in Color: Transparent Material: Plastic Package Contents: 8 x Thickened Suction Cup Note: Light reflection and differences in display screens may cause slight variations in color between the image and the actual item. Measurement allows an error of +/- 1-3 cm.