1. Sufficient for daily use: You will receive 20 suction cups, each with a diameter of approximately 1.57 inches (4 cm). They are small and compact, which can meet your needs for hanging electrical appliances and tools on glass. 2. Suction cup material: The suction cups with screws are made of transparent PVC material and are equipped with nuts. They have good suction, are lightweight, waterproof, and can provide long - term usage results. 3. Wide application: These suction cups are suitable for smooth, flat, and clean surfaces, such as glass, windows, refrigerators, doors, bathroom walls, fiberglass, metal, tiles, etc. Wipe the surface clean before use and then easily fix them in the desired position. 4. Reusable and easy to carry: If you need to move or replace these glass suction cups to another position, simply remove the decorative ring suction cup with a knife, press it directly on the surface, and expel the air inside. In this way, they can still maintain good performance after multiple uses. 5. Usage scenarios: These hook - free plastic suction cups can be used to hang license plates, sun visors, acrylic boards, wicker furniture, wreaths, and larger items, and are suitable for places such as kitchens, offices, and bathrooms. 6. Material: PVC 7. Color: Transparent 8. Package contents: 20 suction cups Only the above package contents are included, and other items are not included. Note: Light reflection and different monitors may cause the color of the items in the picture to be slightly different from the actual object. The measurement error is allowed to be plus or minus 1 - 3 cm.