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, featuring a thickened edge design for enhanced suction and strength, suitable for various applications. Strong Adhesion: These heavy-duty suction cup hooks are made of high-strength, environmentally friendly PVC material, soft and thick, providing strong suction. They can be easily fixed on smooth surfaces and remain firmly attached through repeated use, unaffected by heat or cold, ensuring decorations are securely hung. Anti-Corrosion Design: The screws and threads are constructed from 304 stainless steel with excellent anti-corrosion performance, suitable for use in bathrooms and outdoor environments. The screw and nut design allows for easy installation and removal, improving convenience and safety. Easy to Install: These window suction cups can be used directly without soaking in warm water. Simply ensure the surface and suction cups are clean, press to adhere, then tighten the nut to complete installation. Simple to operate, saving time and effort, suitable for all users. Wide Application: These large suction cups can be applied to most smooth surfaces such as glass, acrylic, metal, tiles, and car windshields, making them 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.