Reliable and Reusable: These suction cups are made of high-quality ABS, PVC, and spring steel materials, strong and not easy to break, waterproof and reusable, providing reliable performance for everyday use. Easy to Use: Window suction cups offer good adsorption; simply press them firmly onto a smooth and clean surface for secure attachment. If needed, add a small amount of water to enhance suction. Good Helper: Suction cup clips are ideal for holding wet towels, duster cloths, or sunshades, and can also hold cards, notes, and bills, helping keep spaces organized and clutter-free. Note: Do not exceed 200g per suction cup to ensure secure hold. Applicable Occasions: Suitable for use in kitchens, homes, bedrooms, bathrooms, shops, stores, cars, on refrigerators, windows, and more. Clips can hold small items for everyday convenience. Sufficient Quantity and Proper Size: Includes 2 black and 2 white suction cup holders. Each measures approximately 3 cm (1.18 inches) in diameter. The practical size and quantity meet daily needs and allow for replacements.