Fit for sponger holder, window bird feeder, home decoration, craft project and windshield and radar detector. Prefect as replacements of the worn out suction cups. 1.8 inch large contact area can provide stronger suction. Maximum load for each sucker: 4 lb. Sticks on any clean, dry, slick, non-porous smooth surfaces such glass, window, metal, tile, aquarium and marble. A tab at the edge to help you break the suction when you want to release it. Soft PVC plastic resists crushing and wearing out. If the suction cups are warped, soak them in warm water for about 2 minutes. What You Get: 20 pack of 1.8 inch large suction cups without hooks.