STRONG SUCTION CUP: This suction cup anchor can be attached to most non-porous and smooth surfaces, it is made of strong material, high strength, long life and light weight; each anchor can hold about 22 lbs/10 kg of weight Package Includes: You will receive 4 suction cup anchors with mounting hooks, the camping suction cups come with a sticky gel base for stronger double suction holding power; and its mounting hooks for securing tents and tarps to cars, trucks, pools, etc. EASY TO USE: These suction cups can stick to smooth surfaces like glass, boats, SUPs, cars and RVs. Release; Before each use, clean the surface with a cleaning cloth to ensure optimal adhesion Reliable quality: this strong suction cup mount is wear-resistant and not easy to break, with high adhesion and better anti-slip effect; it has no glue residue, and a strong sticky gel base is added to the suction cup to provide stronger fixing force; and it can last for a long time in cold or hot environments until you remove it Wide range of uses: the suction cup is suitable for smooth surfaces, flat places such as cars, homes, offices, etc., and will not damage the surface; however, if the surface has a texture, the plastic surface suction cup will not stick; if air enters, the suction will not be maintained because it relies on creating a vacuum