1. [Material and Design] The car suction cup is made of PC, ABS, PVC and metal hooks. High-strength D-shaped buckle, sturdy and durable, wear-resistant, and strong bearing capacity; the new professional PVC suction cup adopts new materials, ultra-high-strength suction, resistance to aging and corrosion, and can be reused. If you can't or don't want to drill, the suction hook is the ideal choice.^2. [4 suction cup holders, 8 S-shaped hooks] The suction cup set is also suitable for heavy-duty applications. The maximum load capacity of the suction hook is 22 kg (48 lb). It can be used as a fixed-purpose car luggage belt tensioner, suitable for outdoor riding, camping, and truck transportation.^3. [Easy to use] Just press the suction cup on a clean and smooth surface, and then pull the joystick to lock the handle. It will not scratch your car. For outdoor campers, the suction hook is the best solution without screws. It can also be used as a hook in bathrooms, kitchens and other places.^4. [Suitable for very smooth surfaces] Before use, make sure that the surface of the car and the suction cup are dry. Car suction cups can only be used on smooth surfaces such as glass, car surfaces, mirrors, and tiles. Not suitable for uneven surfaces, such as patterned tiles.^5. [Scope of application] The multi-functional ultra-thick suction cup can be used as a baggage belt tensioner for camping and traveling, and it can also be used at home. Suction cup fixing device with D-ring and S-hook for installing the awning.