Superior Material & Size: These picture hangers are made of superior ABS Plastic, which is much more sturdy than common PP Plastic. Size of each one is 1.65x0.79 inch, to 25 LBSInvisible&Traceless:Compared with ordinary nails, the nails of these stucco hooks only leave small pinholes that you could barely noticeable, preventing your walls from damageApplicable Walls: It is widely suitable for most walls like concrete/cement wall, stucco/plaster wall, wall paper/wooden wall. These hooks are sturdy and heavy duty, can be used for a long timeEnough Quantities for Wide Use: It includes 40 pack wall hooks. These can be used for picture, tapestry, mirror and more. package!Easy to Install: All you need is a hammer and no drilling needed. It is easy to install. Saving your time and enjoying your beautiful home decorationsColour:WhiteMaterial:PlasticSize:4.2cmPackage Contents:40 x hooksOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.