1. Suction Cup Hooks:Holds up to 100lbs/45kg each suction anchors.The diameter of the large suction cup is 13cm/5.12inch.The larger the bottom area, the stronger the suction force and the heavier objects can be hung 2. Material:The suction cup hooks made of high quality ABS&PVC,more strong and firm,super high-strength suction.No glue,no peculiar smell.Keep suction cups and suction surface clean 3.Reusable: Suck out the air in the heavy duty suction cup to generate negative air pressure,so that the suction cup can be firmly adsorbed on the plane.Washable,reuseable and have a long life.Keep no grooves under suction cup,small grooves will reduce the suction power 4.Quick,Simple Installation: Just push the suction cup anchor to a smooth surface and rotate the handle to secure the lock.Suction cups won't scratch to the car or any other smooth flat 5.Versatile Usage:Suitable for materials with smooth and non-porous surfaces,such as tiles,glass,automobiles or metals.This suction cups with S hooks can use for any place like,bathroom,kitchen,tie tents and tarps to cars and trucks.Suitable for home and outdoor activities