Firm adsorption: These suction cups can be attached to smooth surfaces such as glass, boats, SUPs, cars and RVs. When you are driving and camping, you can attach the suction cups to the back and side of the car to set up a tent. Heavy-duty suction cup: Our suction cup is an ideal tool for travel or home use. Each anchor can bear 10 kg. It is suitable for most smooth, non-porous fabrics. It is used with a bungee cord or rope (not included). Convenient and practical: Suction cup anchors can secure almost anything better, you don't have to worry about dangerous loads, and can also attach tents and tarps to cars and trucks, which is convenient for RVs. Easy to use: When using our suction cup, just press the suction cup onto a clean, smooth surface. When you want to lock it, just rotate the handle to lock it firmly without scratching your car. Our suction cup is made of strong materials (PP and TPU) with high strength. In addition, the durability is maintained in the long term. It has a