●One-step Installation: Just peel off the clear adhesive hooks, then put the clips on smooth surface. ●Holds up to 20 pounds: Heavy duty hooks can hold up to 20 lbs on a smooth surface. ●Enhanced Endurance: Hooks hold strongly in outdoor temperatures between -20 degrees Fahrenheit and 125 degrees Fahrenheit. ●Patent Design: Our unique and stable structure design ensures a secure attachment for your string lights, preventing any undesired falling or shaking. ●Premium Material: Adhesive hooks made of sturdy steel, non-toxic, good quality and long life. Small and lightweight design with versatility!