Super-strong suction cups are produced from high-quality material that won't yellow, deteriorate, or lose adhesion over time. Light diffusing rings prevent focused light from damaging surfaces. Details:Clear1.46" x 1.18" x .65" (3.73cm x 3cm x 1.66cm) suction cup size24 packs (4 suction cups per pack, 96 total suction cups)Metal hooksHolds 1 lb. (0.4 kg)Holds securely in all types of weatherPVC, iron