EYE-CATCHING COLOR & PEARLESCENT REFLECTIVE: These Do Not Enter Private Driveway Stop Warning Signs are built from red, white and black, which can be reflected under the light. Match the bold and captical letter to remaind drivers don't enter private driveway. HEAVY DUTY ALUMINUM MATERIAL: 7x10 inches high quality metal signs are made of 40 mil aluminum, with reflective coating and UV coating glossy finished. Waterproof and dustproof, make sure the " Do Not Enter Private Driveway Stop Warning Sign," sign can last long years indoor or outdoor. CLEAR PLASTIC COVER : Each sign has transparent plastic film is attached to the surface of to prevent it from being scratched before installation. Please tear off this layer of film after installation, the sign will be more clear. EASY TO INSTALL: 4 pre-drilled 4/25 inch holes in the four corners on each Security Warning Signs. You can use screws with a diameter of less than 4/25 inch or zip ties to fix them.(screws and zip ties not included). Signs aslo have rounded and burr-free corners for safe handling. PLACE FOR USE: You can use it near to your garage, or the vicinity of home. In order to tell drivers not enter and use the private driveway. These signs are used to prevent accidents, direct drivers, and discourage uninvited vehicles on your property.