[The Size Of It] Picture Frame Hooks M:1.57"*0.78" Load Weight 20 LBS; L:2.01 "*0.86" Load Weight 30 LBS, Complete installation in 30s.,[Its USES] You Can Freely Combine The No Damage Wall Hangers To Hang Different Items To Decorate, Suitable For Hanging Pictures, Photos, Clocks, Paintings, Small Mirrors, Art, Keys, Clothes, Umbrellas, Bags,[Its Material] Removable Hard Wall Hanger Made Of ABS And Steel Nails,4 Steel Nails Were Gently Driven Into The Wall With A Small Hammer In Selected Locations, Causing Minimal Damage To The Wall And Leaving Only 4 Shallow Holes In The Wall With The Removed Concrete Hook.,[Its Scope Of Application] : Picture Hanging Hardware Can Be Used On All Kinds Of Surfaces, Most Suitable For Dry Wall, Concrete Wall, Cinder Block Wall, Cement Wall, Plaster Wall, Lime Wall, White wall, Wooden Door, etc. Not Suitable For Glass, Tile, Steel Plate.(Attention:There Is No Guarantee That It Will Work 100% On a Concrete Wall.,[ Wall Hanging Kit ]Best Art Painting/Wall Clock/Wedding Photo Wall Solution,[ Tips ] Steel Nails Don't Work On Stone Walls. More User Feedback, Wall Hook Can Work On 90% Of Cement Walls, Concrete Walls, Stucco Walls. If it doesn't work on your wall,Please Contact Us, We Are At Your Service 24 Hours A Day!