Premium Material: The super suction cups are made of high-quality and durable ABS + PVC plastic. The car anchor suction cup also protects your car from damage as it leaves no scratches or marks when removed. Easy to Use: No drilling required. Simply press the suction cup, close the pressure switch, and lock the suction cup. When removing, open the pressure switch and close the cover to prevent dust accumulation during repeated use. It is recyclable. Strong Performance: The suction cup can hold up to 20 kg, and the fasteners are tested to hold up to 50 kg. Please do not use on uneven or rough surfaces. Wallpaper, wall canvas, and plaster are not suitable. Requirement: Please ensure the surface and suction cup hook are clean and dry before use. Our suction cups are perfect for smooth, clean surfaces such as glass, boats, cars, and RVs. Use suction cups to attach tents and tarps to cars and trucks. Wide application: ideal for moving, luggage, camping, awnings, events, concerts, construction, boats, bicycles, surfboards, and much more. It's a perfect product for any camping enthusiast. In addition, the suction cups can be used in the kitchen and bathroom.