[Powerful Suction] 6 black PVC suction cups with M6 screws and locknuts feature a strong adhesive design that securely attaches to smooth surfaces such as glass, walls, doors, porcelain, and car windshields, with a weight capacity of 2.2 lbs [Thick and Sturdy] Measuring 5.5 x 2.85 cm (2.16 x 1.1 inches), these thickened suction cups are more durable than standard versions, ensuring long-lasting stability and reliability [Screw Fixation] Each heavy-duty suction cup includes a screw and threaded insert for easy installation in desired locations, enhancing stability and preventing slipping or falling of items [Easy to Install] To prevent deformation during shipping, soak the suction cups in hot water at approximately 100C for about 6 minutes. Once returned to original shape and dried, press firmly onto a clean, smooth surface for secure installation [Widely Used] These strong window suction pads are versatile and suitable for securing license plates inside windshields, holding car accessories, attaching decorations to windows and walls, and hanging bathroom towels, improving convenience and organization Color: Black Material: Plastic Package Contents: 6 x Black PVC Suction Cups Note: Light reflection and differences in display screens may cause slight variations in color compared to the actual item. Measurement may vary by +/- 1-3 cm